Perhaps you should try some spelling variations:
passiver » passive, passively, passiert
passivere » passivee, passivelye, passierte, passiverer, massivere, passivieren
passiven » passive, passion
passivierende » passivierender, passivieren, aktivierende

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: (passiver OR ((passiven OR (passivierende OR passiveand)) OR passivere))*.