Perhaps you should try some spelling variations:
passiv » passive, massiv, passiven
passivere » passiveere, massivere, passivenere, passiverer, passivieren, passivee, passivene, passivelye
passiver » passiveer, massiver, passivener, passive, passiven, passively
passivene » passiveene, massivene, passivenene, passiven, passiveand, passiverer
massiver » massive, massiven, massively

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 passivere) OR (massiver OR passiver)) OR passivene).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(((passiv or passivere) or (massiver OR passiver)) or passivene)".
• Adding a wildcard symbol may retrieve word variants: (((passiv or passivere) or (massiver OR passiver)) or passivene)*.