Perhaps you should try some spelling variations:
passiv » passive, massiv, passiven
passivierung » passiveierung, massivierung, passivenierung, aktivierung
passivierungs » passiveierungs, massivierungs, passivenierungs, aktivierungs, passivieren, passivierende
massivieren » passivieren, massivere, massigeren
massivierung » massierung, aktivierung, motivierung
massiveren » massivere, massigeren, massivement
massiveeren » massivere, passivieren, massigeren

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