Perhaps you should try some spelling variations:
passiv » passive, passiven, passiver
passivere » passiveere, passivenere, passiverere, passiverer, passiver, massivere
passivel » passiveel, passivenel, passiverel, passively, passive, passiven
passiverwerb » passiveerwerb, 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 ((passivere OR passivere) OR (passivel OR passiverwerb))) OR massiv).
• Adding a wildcard symbol may retrieve word variants: ((passiv or ((passivere or passivere) or (passivel or passiverwerb))) or massiv)*.