Perhaps you should try some spelling variations:
passiv » passive, passiven, passiver
massiv » massive
massiveen » massiveeen, massiven, massivement, massivsten
massiveeen » massiveeeen, massivement, massiven, massivsten
massigen » massige, massigung, massie
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: ((passiv OR massiv) OR ((massiveen OR massiveeen) OR (massigen OR massiger))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((passiv or massiv) or ((massiveen or massiveeen) or (massigen OR massiger)))".
• Adding a wildcard symbol may retrieve word variants: ((passiv or massiv) or ((massiveen or massiveeen) or (massigen OR massiger)))*.