Perhaps you should try some spelling variations:
passiv » massiv, passiven, passiver
passively » massively, passivenely, passiverely, passivity, passiven
passive » massive, passivene, passivere
passiviert » massiviert, passiveniert, passiveriert, passioniert, passivieren, passiert
massiven » 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 passively) OR (passive OR massiven)) OR passiviert).
• Adding a wildcard symbol may retrieve word variants: (((passiv or passively) or (passive or massiven)) or passiviert)*.