How many movies have Lubomír Kostelka and Miloslav Procházka collaborated on?

They have worked on 4 movies together! Their first movie together was Hledá se táta! (1961) while their highest rated movie together was Who Wants to Kill Jessie? (1966). They have not worked together since When You Have a Holiday Dominique (1967). They are most known for their comedy films together.