Perhaps you should try some spelling variations:
passiven » passive, passion
massiven » massive, massively, massiv
massiverer » massierer, passiverer, massiver, massiverr, massivelyr
massivere » massiver, massive, massively

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 (massiven OR (massiverer OR massivere)))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(passiven or (massiven or (massiverer OR massivere)))*".