Perhaps you should try some spelling variations:
passiv » passive, massiv
passivere » passiveere, massivere, passiverer, passivieren, passivee, passierte
passiven » passiveen, massiven, passive, passion
passiver » passiveer, massiver, passive, passiert
passively » passiveely, massively, passive, passivity
massiver » massive, massiven, 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 ((passivere OR passiven) OR ((passiver OR passively) OR massiver))).
• Adding a wildcard symbol may retrieve word variants: (passiv or ((passivere or passiven) or ((passiver or passively) or massiver)))*.