Perhaps you should try some spelling variations:
passiv » passive, massiv, passiven
passiverer » passiveerer, massiverer, passivenerer, passiverwerb, passivieren, passiver
massivere » massive, massively, massiven, massivee, massivene, passivere
massiver » massive, massiven, passiver
motivierte » motiviert, motivieren

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 (passiverer OR (massivere OR massiver))) OR motivierte).
• Adding a wildcard symbol may retrieve word variants: ((passiv or (passiverer or (massivere or massiver))) or motivierte)*.