Perhaps you should try some spelling variations:
passiv » passive, massiv
passivene » passiveene, massivene, passiveand, passive, passively, passivee, passione
passiverer » passiveerer, massiverer, passiverwerb, passivieren, passagerer, passiveer, passivelyer, passierter
passiver » passiveer, massiver, passive, passively, passiert
passiven » passiveen, massiven, passive, passion
passieren » passiert

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