Perhaps you should try some spelling variations:
massiv » massive
passiverer » passiverwerb, passivieren, passieren, passivener, passivelyer, passierter, massiverer, passivierenr, passiviertr
passiver » passiven, passively, passiert
passivere » passivene, passivelye, passierte, massivere, passivieren, passiviert

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: (massiv OR ((passive OR (passiverer OR passiver)) OR passivere)).
• Adding a wildcard symbol may retrieve word variants: (massiv or ((passive or (passiverer or passiver)) or passivere))*.