Perhaps you should try some spelling variations:
informationen anteil » informationen teil, informationen intern, informationen unter
"informatik aktuell" » "informatik aktuelle", "informationen aktuelle", "informatik kulturelle"
"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 aktuell") OR ("informatik modell"))) OR ("((informatik akademie) or (informationen anteil))")).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"informatik aktuell\") OR (\"informatik modell\"))) or (\"((informatik akademie) or (informationen anteil))\"))".
• Removing quotes may allow a broader search: (((( informatik aktuell ) OR ( informatik modell ))) or ( ((informatik akademie) or (informationen anteil)) )).
• Adding a wildcard symbol may retrieve word variants: (((("informatik aktuell") OR ("informatik modell"))) or ("((informatik akademie) or (informationen anteil))"))*.