Perhaps you should try some spelling variations:
passiv » massiv, passiven
passivere » massivere, passivenere, passiverer, passivieren, passivene, passivelye, passierte
passiver » massiver, passivener, passiven, passively, passiert
passive » massive, passivene
massiven » passiven, massively, massiv

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