How many movies have Andreas Schreitmüller and Olaf Grunert collaborated on?

They have worked on 3 movies together! Their first movie together was 300 Worte Deutsch (2015) while their highest rated movie together was Greetings from Fukushima (2016). They have not worked together since Greetings from Fukushima (2016). They are most known for their drama films together.