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

Try widening your search to All Fields.

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 "informationsempfanger").
• Removing quotes may allow a broader search: (( informationsmanager or innovationsmanager ) or informationsempfanger ).
• Adding a wildcard symbol may retrieve word variants: (("informationsmanager" or "innovationsmanager") or "informationsempfanger")*.