Perhaps you should try some spelling variations:
"abhandlungen fur nationalokonomie" » "abhandlungen der nationalokonomie", "abhandlungen aus nationalokonomie", "abhandlungen zum nationalokonomie"
"abhandlungen zur nationalokonomie" » "abhandlungen der nationalokonomie", "abhandlungen und nationalokonomie", "abhandlungen aus nationalokonomie", "abhandlungen uber nationalokonomie"
"abhandlungen die nationalokonomie" » "abhandlungen der nationalokonomie", "abhandlungen und nationalokonomie", "handlungen die nationalokonomie", "abhandlungen des nationalokonomie"

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: (("abhandlungen fur nationalokonomie") OR ((("abhandlungen zur nationalokonomie") OR ("abhandlungen die nationalokonomie")))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"abhandlungen fur nationalokonomie\") or (((\"abhandlungen zur nationalokonomie\") OR (\"abhandlungen die nationalokonomie\"))))".
• Removing quotes may allow a broader search: (( abhandlungen fur nationalokonomie ) or ((( abhandlungen zur nationalokonomie ) OR ( abhandlungen die nationalokonomie )))).
• Adding a wildcard symbol may retrieve word variants: (("abhandlungen fur nationalokonomie") or ((("abhandlungen zur nationalokonomie") OR ("abhandlungen die nationalokonomie"))))*.