Perhaps you should try some spelling variations:
passiv » passive, massiv, passiver
passivere » passiveere, massivere, passiverere, passiver, passivieren
passiverer » passiveerer, massiverer, passivererer, passiverr, passivierenr, passiverwerb, passivieren, passiver
passiven » passiveen, massiven, passiveren, passive

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