Perhaps you should try some spelling variations:
passiv » passive, massiv, passiven
passivieren » passiveieren, massivieren, passivenieren, passivierende, passivierung, passieren
passiveand » passiveeand, massiveand, passiveneand, passiven
massivere » massiver, massive, massively

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 passivieren) OR massivere) OR passiveand).
• Adding a wildcard symbol may retrieve word variants: (((passiv or passivieren) or massivere) or passiveand)*.