Perhaps you should try some spelling variations:
passivierende » passivierender, passivieren, passivierung
aktivierende » aktivierenden, aktivieren, motivierende
passivereand » passiveand, passieren, passivieren
passiven » passion

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: (passive OR ((passivierende OR (aktivierende OR passivereand)) OR passiven))*.