Perhaps you should try some spelling variations:
massiv » massive
passivierenr » passivieren, passivierender, passivierende
passiverer » passiverwerb, passivieren, passieren, passiveer, passivener, passivelyer
passiver » passive, passiven, passively

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: ((massiv OR (passivenenener OR passivierenr)) OR (passiverer OR passiver))*.