Perhaps you should try some spelling variations:
passiv » massiv, passiver
passiven » massiven, passiveren, passion
passive » massive, passivere
passivene » massivene, passiverene, passione, passiveand, passiverer, passively
passivierende » massivierende, passiverierende, passivierender, passivieren, aktivierende

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