Perhaps you should try some spelling variations:
passiv » passive, massiv, passiven
passiveren » passiveeren, massiveren, passiveneren, passivieren, passieren, passiverer
passivierung » passiveierung, massivierung, passivenierung, aktivierung
passively » passiveely, massively, passivenely, passive, passivity
massiveere » massivere, massiver

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 (passiveren OR passivierung)) OR (passively OR massiveere)).
• Adding a wildcard symbol may retrieve word variants: ((passiv or (passiveren or passivierung)) or (passively or massiveere))*.