How many movies have Nikos Alexiou and Omiros Efstratiadis collaborated on?

They have worked on 2 movies together! Their first movie together was Ματωμένη γη (1967) while their highest rated movie together was Στον δάσκαλό μας με αγάπη (1969). They have not worked together since Στον δάσκαλό μας με αγάπη (1969).