Perhaps you should try some spelling variations:
passiv » passive, massiv, passiven
passiveren » passiveeren, massiveren, passiveneren, passivieren, passieren, passiverer
passiveand » passiveeand, massiveand, passiveneand, passiven
massiveand » massiven
massivere » massiver, massive, massively

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