Perhaps you should try some spelling variations:
informationsmanager » informationstrager, informationsmanagement, informationsempfanger
innovationsmanager » innovationsmanagement, innovationsmanagements
informationsmangel » informationsmittel, informationsempfanger, informationsangebot

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: (( informationsmanager OR innovationsmanager ) OR informationsmangel ).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( informationsmanager OR innovationsmanager ) or informationsmangel )".
• Adding a wildcard symbol may retrieve word variants: (( informationsmanager OR innovationsmanager ) or informationsmangel )*.