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

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