Perhaps you should try some spelling variations:
"geoinformation modelse" » "geoinformation models", "information models", "information modelle"
"information modell" » "information modelle", "information model", "information models"
"informatik modell" » "informatic models", "information modelle", "information models"
"geoinformatik modelle" » "geoinformatic modelse", "geoinformation modellee", "geoinformation modelse"
"informatic model" » "informatic models", "information model", "informative model"

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