Perhaps you should try some spelling variations:
passiv » passive, massiv
passivere » passiveere, massivere, passiverer, passivieren, passivee, passivelye, passierte
passiven » passiveen, massiven, passive, passion
passivee » passiveee, massivee, passive, passives, passivem
passiver » passiveer, massiver, passive, passively, passiert

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