Perhaps you should try some spelling variations:
massiv » massive
massiven » massiveen, massive, passiven
massively » massiveely, massive
massivieren » massiveieren, passivieren, massivere, massigeren
passivierende » passivierender, passivieren, aktivierende
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: (massiv OR ((massiven OR massively) OR (((passivierende OR passieren) OR aktivierung) OR massivieren))).
• Adding a wildcard symbol may retrieve word variants: (massiv or ((massiven or massively) or (((passivierende or passieren) or aktivierung) or massivieren)))*.