Perhaps you should try some spelling variations:
"information modell" » "information modelle", "information model", "information models"
"informatik modelle" » "information modelle", "geoinformatik modelle", "bioinformatik modelle", "informatic modele", "informatic modelse", "information modellee"
"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 ((("informatik modelle") OR ("informatik modell"))))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"information modell\") or (((\"informatik modelle\") OR (\"informatik modell\"))))*".
• Removing quotes may allow a broader search: (( information modell ) or ((( informatik modelle ) OR ( informatik modell ))))*.