Perhaps you should try some spelling variations:
passiver » passive, passively, passiert
passivieren » passivierung, passieren, passagieren
passivierende » passivierungde, passierende, passagierende, passivierender, aktivierende, passivierung
massiven » massive, massively, massiv
passivenene » passiveene, passionene
passiven » passive, 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: (passiver OR ((passivenene OR ((passivieren OR passivierende) OR massiven)) OR passiven))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(passiver or ((passivenene or ((passivieren OR passivierende) or massiven)) or passiven))*".