How many movies have Koi Wasana Sitthiwet and Sulaleewan Suwanthat acted in together?

They have worked on 1 movie together! Their first movie together was ก่องข้าวน้อยฆ่าแม่ (1980) and was their highest rated movie together. They have not worked together since ก่องข้าวน้อยฆ่าแม่ (1980).