Perhaps you should try some spelling variations:
passiv » massiv, passiver
passive » massive, passivere
passivierung » massivierung, passiverierung, aktivierung
passiven » massiven, passiveren, passion
passively » massively, passiverely, passivity

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 (passivierung OR passiven)) OR passively))*.