How many movies have Sanyakorn and Somchai Asanajinda collaborated on?

They have worked on 2 movies together! Their first movie together was แผ่นดินของเรา (1976) while their highest rated movie together was ฟ้าเพียงดิน (1981). They have not worked together since ฟ้าเพียงดิน (1981).