Perhaps you should try some spelling variations:
passiv » passive, passiven, passiver
passiveren » passiveeren, passiveneren, passivereren, passieren, passiverer, passiven
passivieren » passiveieren, passivenieren, passiverieren, passivierende, passivierung, passieren
massiv » massive
massivere » massiveere, massiver, massive, massiven
massively » massiveely, massive

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