Perhaps you should try some spelling variations:
passiv » massiv, passiver
passiven » massiven, passiveren, passion
passive » massive, passivere
passivierende » massivierende, passiverierende, passivierender, passivieren, aktivierende
passivierungr » massivierungr, passiverierungr, passivierung, passivierungs, passivierender

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