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

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