Perhaps you should try some spelling variations:
passiv » passive, massiv, passiven
passivierung » passiveierung, massivierung, passivenierung, aktivierung
massivieren » passivieren, massivere, passivierende
massigeren » massiger, massigen, massivere
massively » massive

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 ((massivieren OR passivierung) OR (massigeren OR massively)))*.