Perhaps you should try some spelling variations:
massiv » massive
massively » massiveely, massive
massivere » massiveere, massiver, massive, massiven
passively » passive, passivity, passiven
passiveene » passiven, passiveand, passivierende
passivieren » passivierende, passivierung, passieren
aktivierende » aktivierenden, aktivieren, motivierende

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