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

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