Perhaps you should try some spelling variations:
passiven » passive, passion
massivene » massiven, massivere, massive
massiver » massive, massiven, massively
passiver » passive, passiert
passively » massively, passive, passivity

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: (passiven OR (massivene OR (massiver OR (passiver OR passively))))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(passiven or (massivene or (massiver or (passiver OR passively))))*".