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