There is a mantra for removing many many kind of evil curses and spells. This mantra is called the "Avalokitesvara Great Compassionate Mantra (Dharani)". This mantra has passed down for more than a thousand years. It's origin is beyond a thousand years; it's origin is many many eons before this eon of Kali. Anyway, here is excerpts about the mantra:
Excerpts from The Dharani Sutra
English translation by the Buddhist Text Translation Society, Dharma Realm Buddhist University, USA
If humans and gods recite and hold the phrases of the Great Compassion Mantra, then when they approach the end of life, all the Buddhas of the ten directions will come to take them by the hand to rebirth in whatever Buddhaland they wish, according to their desire.
Should any living beings who recites and holds the spiritual mantra of Great Compassion fall into the three evil paths, I vow not to realise the right enlightenment. Should any living being who recites and holds the spiritual mantra of Great Compassion not be reborn in any Buddhaland, I vow not to realise the right enlightenment. Should any living being who recites and holds the spiritual mantra of Great Compassion not obtain unlimited samadhis and eloquence, I vow not to realise the right enlightenment. Should any living being who recites and holds the spiritual mantra of Great Compassion not obtain the fruits of whatever is sought in this very life, then he cannot have been making proper use of the Dharani of the Great Compassion Heart.
People and gods who recite and hold the Great Compassion Mantra will obtain fifteen kinds of good birth and will not suffer fifteen kinds of bad death.
The bad deaths are: 1. They will not die of starvation or privation.
2. They will not die from having been yoked, imprisoned, caned or otherwise beaten.
3. They will not die at the hands of hostile enemies.
4. They will not be killed in military battle.
5. They will not be killed by tigers, wolves, or other evil beasts.
6. They will not die from the venom of poisonous snakes, black serpents, or scorpions.
7. They will not drown or be burned to death.
8. They will not be poisoned to death.
9. They will not die as a result of sorcery.
10. They will not die of madness or insanity.
11. They will not be killed by landslides or falling trees.
12. They will not die of nightmares sent by evil people.
13. They will not be killed by deviant spirits or evil ghosts.
14. They will not die of evil illnesses which bind the body.
15. They will not commit suicide.
Those who recite and hold the spiritual Mantra of Great Compassion will not suffer any of these fifteen kinds of bad death and will obtain the following fifteen kinds of good birth: 1. Their place of birth will always have a good king.
2. They will always be born in a good country.
3. They will always be born at a good time.
4. They will always meet good friends.
5. The organs of their body will always be complete.
6. Their heart will be pure and full in the way.
7. They will not violate the prohibitive precepts.
8. Their family will be kind and harmonious.
9. They will always have the necessary wealth and goods in abundance.
10. They will always obtain the respect and help of others.
11. Their riches will not be plundered.
12. They will obtain everything they seek.
13. Dragons, gods, and good spirits will always protect them.
14. In the place where they are born they will see the Buddha and hear the Dharma.
15. They will awaken to the profound meaning of that Proper Dharma which they hear.
Those who recite and hold the Great Compassion Mantra will obtain these fifteen kinds of good birth. All gods and people should constantly recite and hold it, without carelessness.
In this world, there are many evil spells that harm people. In Indonesia, Thailand, Vietnam, Malaysia, Singapore, Tibet, Bhutan, Napal, and so on, there are "Jiangtou" spells that make you sick or die. Here are some of the signs or symptons after your are cursed with Jiangtou:
1. You have been a normal and healthy person, but all of a sudden, your body begin to grow maggots. You see doctors and doctors cannot find your origin of the disease.
2. Again you are a healthy person, but all of a sudden you vomit hair or nails from your mouth. It happen often times and this definitely a strong sign that you are cursed by Jiangtou. There is no scientific explaination of how a human being can vomit hair or nails and often times!
3. You have not put a tatto on your skin, but all of a sudden, your skin has some kind of animal marks that look like a tatto. That is a sign you are cursed by animal Jiangtou.
If you are cursed by a cat Jiangtou, here is what you can save yourself. Get some naturally died cat bones, then burn the bones into ash. Mix ash with clean mud or clay, and mold the mixture into a form of a cat. Then, place this mold in front of Avalokitesvara Bodhisattva's shrine table. Get a clean cleaver and also place the cleaver at the shrine table. Recite the "Great Compassionate Mantra" for 1080 times and/or more. Then, slice the mold into pieces with the cleaver. After you've done this ritual, you are free from the Jiangtou curse. Now, I use cat Jiangtou as an example, but if you are cursed by other Jiangtou, you may perform the ritual similiar, i.e., if you are cursed by snake Jiangtou, then get some naturally died snake bones, burn them into ash, and then form a snake mold by mixing the ash with mud or clay. Then perform the ritual similiar to curing the cat Jiangtou.
Let us say that you have a wonderful, healthy, and happy family. Suddenly your family is hit with all kind of disasters or diseases, and this disasters hit many of your family members. This is defnitely a sign that your house is not clean. There are some external spiritual beings doing malicious deed to your family. How do you expel such evil spirits from your house?
Get some pomegranate branches and brake the branches into 1080 pieces. Get a pot for burning as well. Then, dip each pomegranate branch on both sides with honey. Next, recite "The Great Compassionate Mantra" one time and toss a branch into the pot and burn the branch into ash. Repeatly reciting the mantra and tossing the branch into pot until all the branches turn into ash. After such ritual is done, all the evil spirits from your house will be cast away.
There are many places that are haunted by ghosts. It's funny to see many so-called experts don't know how to get rid of ghosts from haunted houses. In movies, we see people cannot do anything. They use guns and knives in trying to get rid of ghosts. Guns and knives for ghosts? In the end, the helpless people just move away from the haunted houses. Now, there are good human beings and there are evil human beings, the same holds true for the world of ghosts. Because I don't want to use such brutal force to get rid of good ghosts, I will not show people here how to cast away ghosts, but I can asure you that performing ritual using the "Great Compassionate Mantra" can also cast away ghosts from haunted houses.
There are some haunted ghosts before they die, they are good people. Some of them cannot handle the suffering of life, and committed suicide. These people after they die, they usually turn into ghosts and live in the places where they had committed suicide. They cannot get out of the place they used to live. If they go outside, there will be Day or Night Wondering Gods ("spiritual police") who will come and handcuff these ghosts and cast them into Avici Hell.
Uh, for the link you put in, that's the 11 Faced Avalokitesvara Heart Dharani Sutra. The Great Compassionate Mantra is much longer and different from the 11 Faced Avalokitesvara Heart Dharani Sutra. Most people like Imee Ooi and Ani Choying Drolma have often confused the Great Compassionate Mantra with the 11 Faced Avalokitesvara Heart Dharani Sutra. If the curse removal ritual you put in this forum works with the 11 Faced Avalokitesvara Heart Dharani Sutra, then keep it. However, if it hasn't worked, here's the actual Great Compassionate Mantra in Sanskrit(also known as Nilakantha Dharani):
https://www.youtube.com/watch?v=H5wyR1xKPXc
Here's the Chinese version(also known as Da Bei Zhou):
https://www.youtube.com/watch?v=3CHQnjW1whA
