Perhaps you should try some spelling variations:
massiv » massive
massiveren » massiveeren, massivere, massigeren, massivement
massiveeren » massiveeeren, massivere, massigeren, massivdecken
passivieren » passivierende, passivierung, passieren

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: (massiv OR (passivieren OR (massiveren OR massiveeren))).
• Adding a wildcard symbol may retrieve word variants: (massiv or (passivieren or (massiveren or massiveeren)))*.