Perhaps you should try some spelling variations:
passiv » passive, massiv, passiven
passivierung » passiveierung, massivierung, passivenierung, aktivierung
passivieren » passiveieren, massivieren, passivenieren, passivierende, passieren, passagieren
massivieren » massivere, massigeren, passivierende
massivierung » passivierungs, massierung, aktivierung
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 ((massivieren OR (passivierung OR massivierung)) OR (massiveren OR passivieren))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(passiv or ((massivieren or (passivierung OR massivierung)) or (massiveren or passivieren)))".
• Adding a wildcard symbol may retrieve word variants: (passiv or ((massivieren or (passivierung OR massivierung)) or (massiveren or passivieren)))*.