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

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