Perhaps you should try some spelling variations:
passiv » passive, passiven, passiver
massiv » massive
massiven » massiveen, massive, passiven, massively
massigen » massige, massigung, massingen, massifen
massig » massing, massif
massiger » massinger, massifer, massive
massie » massive, massif

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