Perhaps you should try some spelling variations:
passiv » passive, passiven, passiver
passiveren » passiveeren, passiveneren, passivereren, passivieren, passieren, passiverer
massiv » massive
massiveeen » massiveeeen, massivement, massiven, massivsten
massie » massive, massif, massiven
massigeren » massiger, massigen, massivere

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 (massie OR (massigeren OR massiveeen)))).
• Adding a wildcard symbol may retrieve word variants: ((passiv or massiv) or (passiveren or (massie or (massigeren or massiveeen))))*.