Perhaps you should try some spelling variations:
passiv » passive, massiv
passivierende » passiveierende, massivierende, passivierender, passivieren, aktivierende
passiven » passiveen, massiven, passive
passiver » passiveer, massiver, passive, passively, 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 ((passivierende OR (passivierende OR (passiven OR passion))) OR passiver)).
• Adding a wildcard symbol may retrieve word variants: (passiv or ((passivierende or (passivierende or (passiven or passion))) or passiver))*.