Perhaps you should try some spelling variations:
passiv » passive, massiv
passiven » passiveen, massiven, passive, passion
passiver » passiveer, massiver, passive, passively, passiert
passierte » passiert, klassierte, passieren
massiven » massive, massively, massiv
massiver » massive, massively, massiv

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 ((passierte OR (massiven OR passiven)) OR (passiver OR massiver))).
• Adding a wildcard symbol may retrieve word variants: (passiv or ((passierte or (massiven or passiven)) or (passiver or massiver)))*.