Perhaps you should try some spelling variations:
passiv » passive, massiv, passiver
passiven » passiveen, massiven, passiveren, passive, passion
passively » passiveely, massively, passiverely, passive, passivity
massivere » massiver, massive, massively
massierer » kassierer, kassierers, massferrer

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