Perhaps you should try some spelling variations:
massiv » massive
massiveen » massiveeen, massiven, massivement, massivsten
massiver » massiveer, massive, massiven, massively
passivieren » passivierende, passivierung, passieren
passiver » passive, passiven, passively
passivener » passiverer, passiven, passiverwerb

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 massiveen) OR ((passiver OR passivener) OR massiver))).
• Adding a wildcard symbol may retrieve word variants: (massiv or ((passivieren or massiveen) or ((passiver or passivener) or massiver)))*.