Perhaps you should try some spelling variations:
passiv » massiv, passiven, passiver
passivenenener » massivenenener, passivenenenener, passiverenenener
passiverwerb » massiverwerb, passivenerwerb, passivererwerb, passiverer
passive » massive, passivene, passivere
massiverwerb » massivere, massierer

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 (passivenenener OR (passiverwerb OR massiverwerb))) OR passive).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((passiv or (passivenenener or (passiverwerb OR massiverwerb))) or passive)".
• Adding a wildcard symbol may retrieve word variants: ((passiv or (passivenenener or (passiverwerb OR massiverwerb))) or passive)*.