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