Perhaps you should try some spelling variations:
passiv » passive, massiv, passiver
passiven » passiveen, massiven, passiveren, passive, passion
passiveen » passiveeen, massiveen, passivereen, passivieren, passiveand, passive
passiverer » passiveerer, massiverer, passivererer, passiverwerb, passivieren, passiver
massivene » massiven, massivere, massive

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 (passiven OR (passiveen OR passiverer))) OR massivene).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((passiv or (passiven or (passiveen OR passiverer))) or massivene)".
• Adding a wildcard symbol may retrieve word variants: ((passiv or (passiven or (passiveen OR passiverer))) or massivene)*.