Perhaps you should try some spelling variations:
"information modell" » "information modelle", "information model", "information modeler"
"information models" » "information model", "information modeling", "information modelling"
"informatik modelle" » "information modelle", "geoinformatik modelle", "bioinformatik modelle", "informatic modele", "informatic modelse", "information modellee"
"informatik modell" » "informatic model", "informatic models", "information modelle"

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