Perhaps you should try some spelling variations:
passiv » passive, massiv, passiven
passivene » passiveene, massivene, passivenene, passiven, passiveand, passive
passiverer » passiveerer, massiverer, passivenerer, passiverwerb, passivieren, passieren, passiveer, passivener, passivelyer
passiver » passiveer, massiver, passivener, passive, passiven, passively
passivierender » passiveierender, massivierender, passivenierender, passivierende, aktivierender, passivieren

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