Perhaps you should try some spelling variations:
passiver » passiven, passively, passiert
passiveand » passiven
passivieren » passivierung, passieren, passagieren
passivierende » passivierungde, passierende, passagierende, passivierender, aktivierende, passivierung

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 (passive OR (passiveand OR (passivieren OR passivierende))))*.