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