Perhaps you should try some spelling variations:
"informative models" » "information models", "normative models", "informatique modeles"
"information modell" » "information modelle", "information model", "information models"
"informatik modell" » "informatic model", "information modelle", "information models"
"informatic models" » "informatic model", "information models", "information model"

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