Perhaps you should try some spelling variations:
passiv » passive, passiver
passiven » passiveen, passiveren, passive, passion
passiveeren » passiveeeren, passivereeren, passivieren, passivierende, passivierung
passiverer » passiveerer, passivererer, passiverwerb, passivieren, passiver
massiv » massive
massivement » massiveement
passieren » passiert

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 (passiven OR (massivement OR ((passiveeren OR passiverer) OR passieren)))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((passiv OR massiv) or (passiven or (massivement or ((passiveeren or passiverer) or passieren))))".
• Adding a wildcard symbol may retrieve word variants: ((passiv OR massiv) or (passiven or (massivement or ((passiveeren or passiverer) or passieren))))*.