Perhaps you should try some spelling variations:
passiven » passive, passion
passivene » passivee, passione, passiveand, passive, passively
passiveerer » passivieren, passiverwerb, passivierter, passiveer, passivelyer
passiveer » passiviert, passive, passively
passiver » passive, passively, passiert
passiverer » passiveer, passivelyer, passierter, passiverwerb, passivieren, passieren

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 ((passiveerer OR passiveer) OR (passiver OR passiverer))).
• Adding a wildcard symbol may retrieve word variants: ((passiven or passivene) or ((passiveerer or passiveer) or (passiver or passiverer)))*.