Perhaps you should try some spelling variations:
passiv » passive, massiv, passiven
passively » passiveely, massively, passivenely, passive, passivity
passiverer » passiveerer, massiverer, passivenerer, passiverwerb, passivieren, passiver
massiviert » passiviert, massivere
massiver » massive, massiven, passiver

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