Perhaps you should try some spelling variations:
passiv » passive, passiven, passiver
massiv » massive
massiven » massiveen, massive, passiven, massively
massigen » massigung, massie, massig, massign
massige » massig
massiger » massigr, massinger, massive, massie

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 (massiven OR ((massigen OR massige) OR massiger))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((passiv or massiv) or (massiven or ((massigen OR massige) or massiger)))".
• Adding a wildcard symbol may retrieve word variants: ((passiv or massiv) or (massiven or ((massigen OR massige) or massiger)))*.