Perhaps you should try some spelling variations:
"geoinformatic modele" » "geoinformatik modelle", "geoinformation models", "bioinformatics models"
"information modelle" » "information modell", "information model", "information models"
"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 ((("information modelle") OR ("geoinformatic modele")))).
• Removing quotes may allow a broader search: (( informatik modell ) or ((( information modelle ) or ( geoinformatic modele )))).
• Adding a wildcard symbol may retrieve word variants: (("informatik modell") or ((("information modelle") or ("geoinformatic modele"))))*.