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

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