Perhaps you should try some spelling variations:
passiv » passive, massiv, passiven
passivenierungr » passiveenierungr, massivenierungr, passivenenierungr, passivierung, passivierungs
massiven » massive, passiven, massiv
massively » massive
aktivierende » aktivierenden, aktivieren, motivierende

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