Perhaps you should try some spelling variations:
passiv » passive, massiv, passiven
passivene » passiveene, massivene, passivenene, passiven, passiveand, passive
passiverer » passiveerer, massiverer, passivenerer, passiverwerb, passivieren, passiver
massiverer » massierer, massiver, massigeren, massiverr, massivelyr
massivere » massiver, massive, massively

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