Perhaps you should try some spelling variations:
passiv » passive, massiv, passiven
passivierende » passiveierende, massivierende, passivenierende, passivierender, passivieren, aktivierende
massiven » massive, passiven, massiv
massively » massive
passieren » passiert, passiven

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 ((massiven OR massively) OR (passieren OR passivierende)))*.