Perhaps you should try some spelling variations:
passiv » massiv, passiver
passiven » massiven, passiveren, passion
passive » massive, passivere
passivere » massivere, passiverere, passiverer, passiver
passiveen » massiveen, passivereen, passiveand, passiverer, passively
passivieren » massivieren, 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 passiven) OR ((passive OR passivere) OR (passiveen OR passivieren))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((passiv OR passiven) or ((passive or passivere) or (passiveen or passivieren)))".
• Adding a wildcard symbol may retrieve word variants: ((passiv OR passiven) or ((passive or passivere) or (passiveen or passivieren)))*.