Perhaps you should try some spelling variations:
passiv » passive, massiv, passiver
passiven » passiveen, massiven, passiveren, passive, passion
passiveieren » passiveeieren, massiveieren, passivereieren, passionierten, passivierende, passieren
passivieren » passiveieren, massivieren, passiverieren, passivierende, passivierung, passieren
massiven » massive, massiv
massively » massive
massivieren » massivere, massigeren, passivierende

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 passiven) OR massively) OR ((passiveieren OR passivieren) OR massivieren))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(passiv or (((massiven or passiven) or massively) or ((passiveieren OR passivieren) or massivieren)))".
• Adding a wildcard symbol may retrieve word variants: (passiv or (((massiven or passiven) or massively) or ((passiveieren OR passivieren) or massivieren)))*.