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

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