Perhaps you should try some spelling variations:
passiv » passiven, passiver
passive » passivene, passivere
massiveren » massivement, passivieren, massiven, massivern, massivelyn, massivenn
massigeren » massiger, massigen, massierer
massivere » massiver, massively, massiven

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 (passive OR (((massiveren OR massigeren) OR massivere) OR massive))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((passiv or massiv) or (passive or (((massiveren OR massigeren) or massivere) or massive)))".
• Adding a wildcard symbol may retrieve word variants: ((passiv or massiv) or (passive or (((massiveren OR massigeren) or massivere) or massive)))*.