Perhaps you should try some spelling variations:
passiv » massiv, passiven, passiver
passive » massive, passivene, passivere
passivene » massivene, passivenene, passiverene, passiven, passiveand, passively
passiverer » massiverer, passivenerer, passivererer, passiverwerb, passiver, passieren
passivieren » massivieren, passivenieren, passiverieren, passivierende, passivierung, passieren

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