Perhaps you should try some spelling variations:
passiv » passive, massiv, passiven
passivere » passiveere, massivere, passivenere, passiverer, passiviert, passivee, passivene, passierte
passivieren » passiveieren, massivieren, passivenieren, passivierende, passivierung, passieren
passively » passiveely, massively, passivenely, passive, passivity, passiven
passiver » passiveer, massiver, passivener, passive, passiven, passiert
massiven » massive, passiven, massiv
massively » massive

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