Perhaps you should try some spelling variations:
passiven » passive, passion
massiv » massive
massiven » massiveen, massive, massively
massivere » massiveere, massive, massively, passiver, massivee, passivere, massivelye
massiver » massiveer, massive, passiver, 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 massiv) OR (massiven OR (massivere OR massiver))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((passiven or massiv) or (massiven or (massivere OR massiver)))".
• Adding a wildcard symbol may retrieve word variants: ((passiven or massiv) or (massiven or (massivere OR massiver)))*.