Perhaps you should try some spelling variations:
passiv » passiven, passiver
passive » passivene, passivere
passivere » passivenere, passiverere, passiverer, passiver, massivere
passiverly » passivenerly, passivererly, passively, passiver, passivel
passiverwerb » passivenerwerb, passivererwerb, passiverer
massiv » 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 passive) OR ((passivere OR passivere) OR (passiverly OR passiverwerb))) OR massiv).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(((passiv OR passive) or ((passivere or passivere) or (passiverly or passiverwerb))) or massiv)".
• Adding a wildcard symbol may retrieve word variants: (((passiv OR passive) or ((passivere or passivere) or (passiverly or passiverwerb))) or massiv)*.