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

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