Perhaps you should try some spelling variations:
"routledge studies in middle ages economic." » "routledge studies in middle wages economic.", "routledge studies in middle makes economic.", "routledge studies in middle smes economic."
"routledge studies in middle area economic." » "routledge studies in middle asean economic.", "routledge studies in middle asia economic.", "routledge studies in middle real economic.", "routledge studies in middle aged economic.", "routledge studies in middle age economic."

Try widening your search to All Fields.

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("routledge studies in middle ages economic.") OR ("routledge studies in middle area economic."))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"routledge studies in middle ages economic.\") OR (\"routledge studies in middle area economic.\"))".
• Removing quotes may allow a broader search: (( routledge studies in middle ages economic. ) OR ( routledge studies in middle area economic. )).
• Adding a wildcard symbol may retrieve word variants: (("routledge studies in middle ages economic.") OR ("routledge studies in middle area economic."))*.