Perhaps you should try some spelling variations:
passiv » passiven, passiver
passive » passivene, passivere
passivene » passivenene, passiverene, passiven, passiverer, passively
passiveand » passiveneand, passivereand, passiven
passivereand » passivenereand, passiverereand, passivierende, passieren, passivieren
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 passive) OR massiv) OR (passivene OR (passiveand OR passivereand))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(((passiv OR passive) or massiv) or (passivene or (passiveand or passivereand)))".
• Adding a wildcard symbol may retrieve word variants: (((passiv OR passive) or massiv) or (passivene or (passiveand or passivereand)))*.