Perhaps you should try some spelling variations:
"world economic and financial service." » "world economic and financial services."
"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 economy and financial distress.", "world economy and financial access.", "world economy and financial strength."

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