Perhaps you should try some spelling variations:
passiv » passiven, passiver
passive » passivene, passivere
passivieren » passivenieren, passiverieren, passivierende, passivierung, passieren
passivenierung » passivenenierung, passiverenierung, passivierung, passivierungs
massiv » massive
massively » massiveely, massive
massivieren » massiveieren, 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 passive) OR ((massiv OR massively) OR ((passivieren OR passivenierung) OR massivieren))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((passiv OR passive) or ((massiv or massively) or ((passivieren or passivenierung) or massivieren)))".
• Adding a wildcard symbol may retrieve word variants: ((passiv OR passive) or ((massiv or massively) or ((passivieren or passivenierung) or massivieren)))*.