Perhaps you should try some spelling variations:
passiv » passive, massiv, passiven
passivene » passiveene, massivene, passivenene, passiven, passiveand, passiverer
passively » passiveely, massively, passivenely, passive, passivity
massiven » massive, passiven, massively
massiveren » massivere, massigeren, massivement

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 passivene) OR (passivene OR passively)) OR (massiven OR massiveren)).
• Adding a wildcard symbol may retrieve word variants: (((passiv or passivene) or (passivene or passively)) or (massiven or massiveren))*.