Perhaps you should try some spelling variations:
informationen visuelle » informationen aktuelle, informationen erstellen, information visually
"informatik aktuell" » "informatik aktuelle", "informatik modell", "informationen aktuelle"
information unter » information under, information enter, information inter

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 ("((informationen visuelle) or (information unter))")).
• Removing quotes may allow a broader search: (( informatik aktuell ) or ( ((informationen visuelle) or (information unter)) )).
• Adding a wildcard symbol may retrieve word variants: (("informatik aktuell") or ("((informationen visuelle) or (information unter))"))*.