Perhaps you should try some spelling variations:
"information modell" » "information modelle", "information models", "information modeler", "information modelingl"
"informatik modell" » "information modelle", "information models", "informative models"
"geoinformatik modelle" » "geoinformation modellee", "geoinformation modelse", "geoinformative modelse"
"informatic models" » "information models", "informative models", "informative model", "information modelss", "informative modelss"
"information model" » "information modeling"
"informatic model" » "informative model", "information models", "informative 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 ("informatic models"))) OR ((("information modell") OR ("information model"))))) OR ((("informatic model") OR ("geoinformatik modelle")))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((((\"informatik modell\") OR (\"informatic models\"))) or (((\"information modell\") or (\"information model\"))))) or (((\"informatic model\") or (\"geoinformatik modelle\"))))".
• Removing quotes may allow a broader search: (((((( informatik modell ) OR ( informatic models ))) or ((( information modell ) or ( information model ))))) or ((( informatic model ) or ( geoinformatik modelle )))).
• Adding a wildcard symbol may retrieve word variants: (((((("informatik modell") OR ("informatic models"))) or ((("information modell") or ("information model"))))) or ((("informatic model") or ("geoinformatik modelle"))))*.