Perhaps you should try some spelling variations:
passiven » passive, passion
massivieren » passivieren, massigeren, passivierende
massivere » massiver, massive, massively
massiveren » massivern, massiven, massivelyn, massigeren, massivement, passivieren
passivierung » aktivierung
massiveeren » passivieren, massigeren, massivdecken

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: (passiven OR (((massivieren OR massivere) OR passivierung) OR (massiveren OR massiveeren))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(passiven or (((massivieren OR massivere) or passivierung) or (massiveren or massiveeren)))".
• Adding a wildcard symbol may retrieve word variants: (passiven or (((massivieren OR massivere) or passivierung) or (massiveren or massiveeren)))*.