Perhaps you should try some spelling variations:
passiv » passive, massiv, passiven
passivierender » passiveierender, massivierender, passivenierender, aktivierender, passerender, passierender, passagierender, passioniertender
passivierende » passiveierende, massivierende, passivenierende, aktivierende, passerende, passierende, passagierende, passioniertende
passivieren » passiveieren, massivieren, passivenieren, passieren, passagieren, passionierten
passivierung » passiveierung, massivierung, passivenierung, aktivierung

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 passion) OR ((passivierender OR passivierende) OR (passivieren OR passivierung))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((passiv or passion) or ((passivierender or passivierende) or (passivieren OR passivierung)))".
• Adding a wildcard symbol may retrieve word variants: ((passiv or passion) or ((passivierender or passivierende) or (passivieren OR passivierung)))*.