Perhaps you should try some spelling variations:
passiv » passive, massiv, passiven
passivierende » passiveierende, massivierende, passivenierende, passivierender, passivieren, aktivierende
passivierungr » passiveierungr, massivierungr, passivenierungr, passivierung, passivierungs, passivierender
massiven » massive, passiven, massiv
massively » massive

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