Perhaps you should try some spelling variations:
"essener beitrage zur dialogforschung" » "essen beitrage zur dialogforschung", "eigenes beitrage zur dialogforschung", "seiner beitrage zur dialogforschung", "essener beitrag zur dialogforschung"
"segner beitrage zur dialogforschung" » "seiner beitrage zur dialogforschung", "neuer beitrage zur dialogforschung", "euler beitrage zur dialogforschung", "segner beitrag zur dialogforschung"

Try widening your search to All Fields.

You may be able to get more results by adjusting your search query.

• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"essener beitrage zur dialogforschung\") OR (\"segner beitrage zur dialogforschung\"))".
• Removing quotes may allow a broader search: (( essener beitrage zur dialogforschung ) OR ( segner beitrage zur dialogforschung )).
• Adding a wildcard symbol may retrieve word variants: (("essener beitrage zur dialogforschung") OR ("segner beitrage zur dialogforschung"))*.