Perhaps you should try some spelling variations:
passiv » massiv, passiver
passive » massive, passivere
passivere » massivere, passiverere, passiverer, passiver
passiven » massiven, passiveren, passion
passiverere » massiverere, passivererere, passivererre, passiverre, passiverer, passiverwerb, passivierende

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