Perhaps you should try some spelling variations:
"supply towards improving countries." » "supply towards importing countries.", "supply towards borrowing countries.", "supply towards emerging countries.", "supply towards improved countries."
"supply trade international economics." » "supply care international economics.", "supply private international economics.", "supply states international economics.", "supply side international economics.", "supply case international economics.", "supply trade international economic."

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("supply towards improving countries.") OR ("supply trade international economics."))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"supply towards improving countries.\") OR (\"supply trade international economics.\"))*".
• Removing quotes may allow a broader search: (( supply towards improving countries. ) OR ( supply trade international economics. ))*.