Perhaps you should try some spelling variations:
passiv » massiv, passiven, passiver
passive » massive, passivene, passivere
passiveneer » massiveneer, passiveneneer, passivereneer, passiverer
passiverwerb » massiverwerb, passivenerwerb, passivererwerb, passiverer
massively » 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 passive) OR (passion OR massively)) OR (passiveneer OR passiverwerb)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(((passiv or passive) or (passion or massively)) or (passiveneer OR passiverwerb))".
• Adding a wildcard symbol may retrieve word variants: (((passiv or passive) or (passion or massively)) or (passiveneer OR passiverwerb))*.