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

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: (("world economic and financial service.") or ((((("world economy and financial stress.") or ("world economy and financial distress."))) or ("world economy and financial strengthen."))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("world economic and financial service.") OR ((((("world economy and financial stress.") OR ("world economy and financial distress."))) OR ("world economy and financial strengthen.")))).
• Removing quotes may allow a broader search: (( world economic and financial service. ) or ((((( world economy and financial stress. ) or ( world economy and financial distress. ))) or ( world economy and financial strengthen. )))).
• Adding a wildcard symbol may retrieve word variants: (("world economic and financial service.") or ((((("world economy and financial stress.") or ("world economy and financial distress."))) or ("world economy and financial strengthen."))))*.