Perhaps you should try some spelling variations:
"geoinformation modelle" » "information modelle", "die informationsmodelle", "22 informationsmodelle"
"geoinformation models" » "information models", "information model", "deformation models"
"informatik modelle" » "informatik modell", "information modelle", "bioinformatik modelle"
"geoinformatik modelle" » "geoinformatik modell", "geoinformation modelle", "geobioinformatik modelle"
"informatic models" » "informatic model", "information models", "informative models"

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