There is Resurrection of the Criminal Case Act in Thailand under which anyone who wants a retrial or resurrection of a criminal case, and the case was finalized, has to submit a petition to the court in the relevant jurisdiction.
Then there will be a trial in which the judge will render judgment on whether or not to allow resurrection of the criminal case.
The petitioner has to achieve the burden of proof showing that there is evidence different from the previous trial, and which the judge has never considered before.
It is very difficult to request for resurrection of a criminal case.