How many movies have Broněk Černý and Zdeněk Troška collaborated on?

They have worked on 4 movies together! Their first movie together was Sun, Hay, Berries (1984) while their highest rated movie together was Sun, Hay and a Couple of Slaps (1989). They have not worked together since Kameňák (2003). They are most known for their comedy films together.