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

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 stress.") OR ("world economic and financial services."))) OR ("world economic and financial strength."))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"world economic and financial stress.\") OR (\"world economic and financial services.\"))) OR (\"world economic and financial strength.\"))".
• Removing quotes may allow a broader search: (((( world economic and financial stress. ) OR ( world economic and financial services. ))) OR ( world economic and financial strength. )).
• Adding a wildcard symbol may retrieve word variants: (((("world economic and financial stress.") OR ("world economic and financial services."))) OR ("world economic and financial strength."))*.