Perhaps you should try some spelling variations:
massiv » massive
massiveand » massiveeand, passiveand, massiven
passivene » passiven, passiveand, passiverer
aktivierende » aktivierenden, aktivieren, motivierende
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 ((passivene OR (aktivierende OR massiveand)) OR passiver))*.