Perhaps you should try some spelling variations:
passiv » massiv, passiver
passive » massive, passivere
passiven » massiven, passiveren, passion
passivierende » massivierende, passiverierende, passivierender, passivieren, aktivierende
passivierenr » massivierenr, passiverierenr, passivieren, passivierender, passivierung

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