Perhaps you should try some spelling variations:
passiv » passive, massiv, passiven
passiverer » passiveerer, massiverer, passivenerer, passiverwerb, passivieren, passiver
passively » passiveely, massively, passivenely, passive, passivity
massiverwerb » passiverwerb, massierer, massivewerb, massivenwerb
massiver » massive, massiven, passiver
massivere » massivee, massivene, passivere, massive, massively, massiven

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 ((passiverer OR massiverwerb) OR massiver)) OR (massivere OR passively)).
• Adding a wildcard symbol may retrieve word variants: ((passiv or ((passiverer or massiverwerb) or massiver)) or (massivere or passively))*.