I am not too familiar with Romanian church records but check out LDS-Mormons (Family History Center)f website under the Hungarian spelling of a town to see if any films are available.
Is it possible that the Hungarian name of a town should be Tiszaszentmarton and not Discoszentmarton? Tisza being a name of a river, szent - saintand Marton - Martin. The village of Tiszaszentmarton is in Hungary and close to Ukraine border.
You could try Hungary Genforum as there are several genealogist-helpers who could tell you the name since my round about directions are not of great help.