How many movies have Lubomír Kostelka and Zbyněk Vavřín collaborated on?

They have worked on 4 movies together! Their first movie together was Kufr čili Silvestrovské kousky Miloše Kopeckého a Františka Filipovského (1973) and was their highest rated movie together. They have not worked together since Můj obchod se psy (1986). They are most known for their comedy films together.