Perhaps you should try some spelling variations:
informationen anteil » informationen teil, informationen intern, informationen unter
informatik aktuelle » informationen aktuelle, informatik kulturelle, informatik akademie
"informatik modell" » "information modell", "informatic model", "informatic models"

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