Perhaps you should try some spelling variations:
passiv » passiven, passiver
passively » passivenely, passiverely, massively, passivity, passiven
passive » passivene, passivere
passivere » passivenere, passiverere, passiverer, passiver, massivere
massiv » massive
massiven » massiveen, massive, passiven, 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 massiv) OR (passively OR (passive OR passivere))) OR massiven).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(((passiv or massiv) or (passively or (passive OR passivere))) or massiven)".
• Adding a wildcard symbol may retrieve word variants: (((passiv or massiv) or (passively or (passive OR passivere))) or massiven)*.