Perhaps you should try some spelling variations:
"world economy and financial surveys." » "world economy and financial stress.", "world economy and financial burden.", "world economy and financial studies.", "world economic and financial surveys."
"world economy and financial systems." » "world economy and financial system.", "world economy and financial statements.", "world economic and financial systems."
"world economy and financial service." » "world economic and financial service."
"world economy and financial services." » "world economic and financial services.", "world economy and financial series."

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

• Performing a fuzzy search may retrieve terms with similar spellings: (((("world economy and financial surveys.") or ((("world economy and financial service.") OR ("world economy and financial services."))))) or ("world economy and financial systems."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("world economy and financial surveys.") OR ((("world economy and financial service.") OR ("world economy and financial services."))))) OR ("world economy and financial systems.")).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"world economy and financial surveys.\") or (((\"world economy and financial service.\") OR (\"world economy and financial services.\"))))) or (\"world economy and financial systems.\"))".
• Removing quotes may allow a broader search: (((( world economy and financial surveys. ) or ((( world economy and financial service. ) OR ( world economy and financial services. ))))) or ( world economy and financial systems. )).
• Adding a wildcard symbol may retrieve word variants: (((("world economy and financial surveys.") or ((("world economy and financial service.") OR ("world economy and financial services."))))) or ("world economy and financial systems."))*.