Perhaps you should try some spelling variations:
passiv » passive, massiv
passiven » passiveen, massiven, passive, passion
passiver » passiveer, massiver, passive, passively, passiert
passivereren » passiveereren, massivereren, passiveeren, passivelyeren, passierteren, passiverer, passivierenden, passieren
passivieren » passiveieren, massivieren, passivierende, passivierung, passieren
massively » massive

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 passiven) OR (massively OR (passiver OR (passivereren OR passivieren)))).
• Adding a wildcard symbol may retrieve word variants: ((passiv or passiven) or (massively or (passiver or (passivereren or passivieren))))*.