Perhaps you should try some spelling variations:
passiv » passive, passiver
passiven » passiveen, passiveren, passive, passion
passivereren » passiveereren, passiverereren, passivieren, passiverer, passivierenden
passiveneren » passiveeneren, passivereneren, passiveeren, passioneren, passivieren, passieren, passiverer
massiv » massive
massivere » massiveere, 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 massiv) OR ((passivereren OR passiveneren) OR (massierer OR massivere)))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(((passiv OR passiven) or massiv) or ((passivereren or passiveneren) or (massierer or massivere)))*".