Perhaps you should try some spelling variations:
"geoinformation modelle" » "geoinformation models", "die informationsmodelle", "22 informationsmodelle", "geoinformation modell", "geoinformation model"
"geoinformatic model" » "geoinformation models", "bioinformatics model", "informatic model"
"information modelle" » "information modell", "information model", "information models"
"informatik modelle" » "bioinformatik modelle", "informatic model", "informatic models", "information modelle", "informatic modele", "informatic modelse"
"geoinformatik modelle" » "geobioinformatik modelle", "geoinformatic model", "geoinformatic models", "geoinformation modelle", "geoinformatic modele", "geoinformatic 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 ((((("geoinformatik modelle") OR ("geoinformatic model"))) OR ((("geoinformation modelle") OR ("information modelle")))))))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"informatik modell\") or (((\"informatik modelle\") or (((((\"geoinformatik modelle\") or (\"geoinformatic model\"))) or (((\"geoinformation modelle\") OR (\"information modelle\"))))))))".
• Removing quotes may allow a broader search: (( informatik modell ) or ((( informatik modelle ) or ((((( geoinformatik modelle ) or ( geoinformatic model ))) or ((( geoinformation modelle ) OR ( information modelle )))))))).
• Adding a wildcard symbol may retrieve word variants: (("informatik modell") or ((("informatik modelle") or ((((("geoinformatik modelle") or ("geoinformatic model"))) or ((("geoinformation modelle") OR ("information modelle"))))))))*.