Perhaps you should try some spelling variations:
massiv » massive
passivene » passiven, passiveand, passively
passiverer » passiverwerb, passivieren, passiver, passiverr, massiverer, passivierenr
passivere » passiver, massivere, passivieren

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 (passivene OR passiverer)) OR passivere)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(massiv or ((passive or (passivene OR passiverer)) or passivere))".
• Adding a wildcard symbol may retrieve word variants: (massiv or ((passive or (passivene OR passiverer)) or passivere))*.