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