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

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