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