Perhaps you should try some spelling variations:
passiven » passive, passion
passivene » passivee, passione, passiveand, passiverer, passive
passierende » passerende, passivierende, grassierende
passivieren » passivierende, passivierung, passieren
massiverer » massivere, massierer, passiverer

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: (passiven OR ((passivene OR (passierende OR passivieren)) OR massiverer))*.