Perhaps you should try some spelling variations:
passiv » passive, massiv, passiven
passivierende » passiveierende, massivierende, passivenierende, passivierender, passivieren, aktivierende
passiverer » passiveerer, massiverer, passivenerer, passiverwerb, passivieren, passiver
massivierende » passivierender, passivierenden, rassisierende, passivierende, massigerende, passivierungde
massivieren » passivieren, massigeren, passivierung
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 ((passivierende OR massivierende) OR massivieren)) OR (passiverer OR massivere)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((passiv or ((passivierende OR massivierende) or massivieren)) or (passiverer or massivere))".
• Adding a wildcard symbol may retrieve word variants: ((passiv or ((passivierende OR massivierende) or massivieren)) or (passiverer or massivere))*.