Perhaps you should try some spelling variations:
"world economic and financial strategies." » "world economic and financing strategies.", "world economic and financial strategy.", "world economic and finance strategies."
"world economic and financial strengths." » "world economic and financial stress.", "world economic and financial stresses.", "world economic and financial strengthens."
"world economic and financial streams." » "world economic and financial stress.", "world economic and financial stresses.", "world economic and financial distress."
"world economy and financial strength." » "world economy 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 strengths.") or ("world economic and financial strategies."))) or ("world economic and financial streams."))) or ("world economy and financial strength."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((((("world economic and financial strengths.") OR ("world economic and financial strategies."))) OR ("world economic and financial streams."))) OR ("world economy and financial strength."))*.
• Removing quotes may allow a broader search: (((((( world economic and financial strengths. ) or ( world economic and financial strategies. ))) or ( world economic and financial streams. ))) or ( world economy and financial strength. ))*.