How many movies have Eugène Labiche and Miloš Kopecký collaborated on?

They have worked on 3 movies together! Their first movie together was Trik aneb Jak dámu okouzlit aneb Jak manžela oblafnout (1964) while their highest rated movie together was Straw Hat (1972). They have not worked together since Straw Hat (1972). They are most known for their comedy films together.