Perhaps you should try some spelling variations:
"bioinformatik modelle" » "bioinformatic modeling", "bioinformatics models", "bioinformatics model", "bioinformatic modele", "bioinformatic modelse", "bioinformation modellee"
"information modell" » "information modelle", "information model", "information models"
"informatik modell" » "informatic model", "informatic models", "information modelle"
"geoinformatik modelle" » "geoinformatic modele", "geoinformatic modelse", "geoinformation modellee"

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