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

You may be able to get more results by adjusting your search query.

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