Perhaps you should try some spelling variations:
passiv » passive, massiv, passiven
passiveeren » passiveeeren, massiveeren, passiveneeren, passieren, passiverer, passivierende
passivieren » passiveieren, massivieren, passivenieren, passivierende, passivierung, passieren
massiven » massive, passiven, massively
massivere » massiver, massive, 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 (massiven OR (massivere OR (passiveeren OR passivieren)))).
• Adding a wildcard symbol may retrieve word variants: (passiv or (massiven or (massivere or (passiveeren or passivieren))))*.