Perhaps you should try some spelling variations:
passiv » passive, massiv, passiver
passiven » passiveen, massiven, passiveren, passive, passion
passiveren » passiveeren, massiveren, passivereren, passivieren, passieren, passiverer
passivierende » passiveierende, massivierende, passiverierende, passivierender, passivieren, aktivierende
passivierungr » passiveierungr, 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 (passiveren OR passivierende)) OR passivierungr).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(((passiv OR passiven) or (passiveren or passivierende)) or passivierungr)".
• Adding a wildcard symbol may retrieve word variants: (((passiv OR passiven) or (passiveren or passivierende)) or passivierungr)*.