Perhaps you should try some spelling variations:
passiv » passive, passiven
passiver » passiveer, passivener, passive, passiven, passively
passiverer » passiveerer, passivenerer, passiveer, passivener, passivelyer, passiverwerb, passivieren, passieren
passivenenere » passiveenenere, passivenenenere
massiv » 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 passiver) OR passiverer) OR massiv) OR passivenenere)*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((passiv OR passiver) or passiverer) or massiv) or passivenenere)*".