Perhaps you should try some spelling variations:
"information modell" » "information modelle", "information models", "information modeler", "information modelingl"
"informatik modelle" » "informatik modell", "information modelle", "bioinformatik modelle"
"geoinformatik modelle" » "geoinformatik modell", "geoinformation modelle", "geobioinformatik modelle"
"information model" » "information modeling"

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