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

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

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