How many movies have Helena Vondráčková and Miluše Voborníková acted in together?

They have worked on 4 movies together! Their first movie together was Rendez-vous pri Dunaji (1970) while their highest rated movie together was Žabí muzikál (1971). They have not worked together since Kouzelný kolotoč (1978). They are most known for their music films together.