Perhaps you should try some spelling variations:
passiv » passive, passiven, passiver
passiveren » passiveeren, passiveneren, passivereren, passivieren, passieren, passiverer
passiveneneren » passiveeneneren, passiveneneneren, passivereneneren
massiv » massive
massiveeren » massiveeeren, massivere, passivieren, massigeren
massigen » massiger, massige, massigung

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 massiv) OR ((passiveren OR passiveneneren) OR (massigen OR massiveeren))).
• Adding a wildcard symbol may retrieve word variants: ((passiv or massiv) or ((passiveren or passiveneneren) or (massigen or massiveeren)))*.