Perhaps you should try some spelling variations:
passiv » passive, massiv, passiven
passiver » passiveer, massiver, passivener, passive, passiven, passively
passiverer » passiveerer, massiverer, passivenerer, passiveer, passivener, passivelyer, passiverwerb, passieren, passagerer
passiveene » passiveeene, massiveene, passiveneene, passiven, passiveand
passivierende » passiveierende, massivierende, passivenierende, passivierender, aktivierende, passivierung, passivierungde, passierende, passagierende
passivieren » passiveieren, massivieren, passivenieren, passivierung, passieren, passagieren
passierende » passerende, grassierende, haussierende

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