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

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: (("informatic models") OR ((("information modelse") OR ("geoinformatik modelle")))).
• Removing quotes may allow a broader search: (( informatic models ) or ((( information modelse ) or ( geoinformatik modelle )))).
• Adding a wildcard symbol may retrieve word variants: (("informatic models") or ((("information modelse") or ("geoinformatik modelle"))))*.