Perhaps you should try some spelling variations:
"informationen aktuelle" » "informationen visuelle", "annotationen aktuelle", "informationen anteil"
informationen intern » informationen internet, informationen unter, informationen liefern
informatik aktuelle » informatik kulturelle, informatik akademie

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: (("informationen aktuelle") OR ("((informatik aktuelle) or (informationen intern))")).
• Removing quotes may allow a broader search: (( informationen aktuelle ) or ( ((informatik aktuelle) or (informationen intern)) )).
• Adding a wildcard symbol may retrieve word variants: (("informationen aktuelle") or ("((informatik aktuelle) or (informationen intern))"))*.