Perhaps you should try some spelling variations:
passiv » passive, massiv, passiven
passiverer » passiveerer, massiverer, passivenerer, passiverwerb, passiver, passieren
passiveene » passiveeene, massiveene, passiveneene, passiven, passiveand
passivierende » passiveierende, massivierende, passivenierende, passivierender, aktivierende, passivierung, passivierungde, passierende, passagierende
passivieren » passiveieren, massivieren, passivenieren, passivierung, passieren, passagieren
massiver » massive, massiven, passiver

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 massiver) OR (passiverer OR (passiveene OR (passivierende OR passivieren)))).
• Adding a wildcard symbol may retrieve word variants: ((passiv or massiver) or (passiverer or (passiveene or (passivierende or passivieren))))*.