Perhaps you should try some spelling variations:
passiv » passive, passiven, passiver
passivene » passiveene, passivenene, passiverene, passiven, passiveand, passive
passiverer » passiveerer, passivenerer, passivererer, passiverwerb, passivieren, passiver
passiveieren » passiveeieren, passiveneieren, passivereieren, passivieren, passionierten, passivierende
passivierung » passiveierung, passivenierung, passiverierung, aktivierung
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 massiv) OR (passivene OR passiverer)) OR (passiveieren OR passivierung)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(((passiv or massiv) or (passivene OR passiverer)) or (passiveieren or passivierung))".
• Adding a wildcard symbol may retrieve word variants: (((passiv or massiv) or (passivene OR passiverer)) or (passiveieren or passivierung))*.