Perhaps you should try some spelling variations:
"geoinformation modelle" » "geoinformation models", "information modelle", "die informationsmodelle", "geoinformation modellee", "geoinformation modele", "geoinformation modelse"
"information modell" » "information modelle", "information model", "information models"
"informatik modelle" » "information modelle", "bioinformatik modelle", "informatic model", "informatic modele", "informatic modelse", "information modellee"
"geoinformatik modelle" » "geoinformation modelle", "geobioinformatik modelle", "geoinformatic model", "geoinformatic modele", "geoinformatic modelse", "geoinformation modellee"
"informatik modell" » "informatic model", "informatic models", "information modelle"

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 modell"))) OR ((("informatik modelle") OR ((("geoinformatik modelle") OR ("geoinformation modelle")))))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"informatik modell\") OR (\"information modell\"))) or (((\"informatik modelle\") or (((\"geoinformatik modelle\") or (\"geoinformation modelle\"))))))".
• Removing quotes may allow a broader search: (((( informatik modell ) OR ( information modell ))) or ((( informatik modelle ) or ((( geoinformatik modelle ) or ( geoinformation modelle )))))).
• Adding a wildcard symbol may retrieve word variants: (((("informatik modell") OR ("information modell"))) or ((("informatik modelle") or ((("geoinformatik modelle") or ("geoinformation modelle"))))))*.