Perhaps you should try some spelling variations:
massiv » massive
passiven » passive, passion
passiveren » passivieren, passieren, passiver, passivern, massiveren, passivierenn
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 (passiven OR (passiveren OR passiverer))) OR passivere).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((massiv or (passiven or (passiveren OR passiverer))) or passivere)".
• Adding a wildcard symbol may retrieve word variants: ((massiv or (passiven or (passiveren OR passiverer))) or passivere)*.