Perhaps you should try some spelling variations:
passiv » passiven, passiver
passive » passivene, passivere
passivere » passivenere, passiverere, passiverer, passiver, massivere
passiverely » passivenerely, passivererely, passivererly, passiverly, massiverely, passively, passiverer
passiverwerb » passivenerwerb, passivererwerb, 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: ((passiv OR ((passive OR passivere) OR (passiverely OR passiverwerb))) OR massiv).
• Adding a wildcard symbol may retrieve word variants: ((passiv or ((passive or passivere) or (passiverely or passiverwerb))) or massiv)*.