Perhaps you should try some spelling variations:
passiv » massiv, passiver
passiven » massiven, passiveren, passion
passive » massive, passivere
passiveeren » massiveeren, passivereeren, passieren, passiverer, passivierende
passivieren » massivieren, passiverieren, passivierende, passivierung, passieren
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 ((passiven OR passive) OR (massiveren OR (passiveeren OR passivieren)))).
• Adding a wildcard symbol may retrieve word variants: (passiv or ((passiven or passive) or (massiveren or (passiveeren or passivieren))))*.