Perhaps you should try some spelling variations:
passiv » massiv, passiven
passive » massive, passivene
passiveand » massiveand, passiveneand, passiven
passiver » massiver, passivener, passiven, passiert
passively » massively, passivenely, passivity, passiven
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 (((passive OR massive) OR (aktivierende OR passiveand)) OR (passiver OR passively)))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(passiv or (((passive or massive) or (aktivierende or passiveand)) or (passiver OR passively)))*".