Perhaps you should try some spelling variations:
massiv » massive
passiver » passively, passiert
passiverwerb » passivelywerb, passiertwerb, passiverer
passiven » passion
passivenener » passionener, passivierender, passiverer

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