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