How many movies have Nobuyo Oyama and Sadayoshi Tominaga collaborated on?

They have worked on 9 movies together! Their first movie together was Doraemon: Nobita's Dinosaur (1980) while their highest rated movie together was Doraemon: Nobita's Three Visionary Swordsmen (1994). They have not worked together since Doraemon: Nobita and the Robot Kingdom (2002). They are most known for their family films together.