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