Perhaps you should try some spelling variations:
passiver » passiven, passively, passiert
passivere » passivene, passivelye, passierte, passiverer, massivere, passivieren
passiverely » passivenely, passivelyely, passiertely, passivererly, massiverely, passivierenly, passively, passiverer
passiverwerb » passivenwerb, passivelywerb, passiertwerb, passiverer
massiv » 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: ((passiver OR ((passive OR passivere) OR (passiverely OR passiverwerb))) OR massiv).
• Adding a wildcard symbol may retrieve word variants: ((passiver or ((passive or passivere) or (passiverely or passiverwerb))) or massiv)*.