Perhaps you should try some spelling variations:
massiv » massive
passiver » passiven, passively, passiert
passiverer » passivener, passivelyer, passierter, passivieren, passieren, passagerer
passiverwerb » passivenwerb, passivelywerb, passiertwerb
passivener » passiven

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: (massiv OR (passive OR (passiver OR ((passivener OR passiverer) OR passiverwerb)))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(massiv or (passive or (passiver or ((passivener OR passiverer) or passiverwerb))))".
• Adding a wildcard symbol may retrieve word variants: (massiv or (passive or (passiver or ((passivener OR passiverer) or passiverwerb))))*.