Perhaps you should try some spelling variations:
passiv » passive, massiv
passivenene » passiveenene, massivenene, passivierende, passiveene, passionene
passiven » passiveen, massiven, passive, passion
passiver » passiveer, massiver, passive, passively, passiert
aktivierende » aktivierenden, aktivieren, motivierende
massiven » massive, massively, massiv

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 ((passivenene OR (aktivierende OR (passiven OR massiven))) OR passiver))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(passiv or ((passivenene or (aktivierende or (passiven OR massiven))) or passiver))*".