Perhaps you should try some spelling variations:
"export data international efforts." » "export data international airports.", "export data international energy.", "export data international airport.", "export rate international efforts.", "export japan international efforts.", "export ghana international efforts.", "export day international efforts.", "import data international efforts.", "export ratio international efforts."
"supply trade information theory." » "supply price information theory.", "supply private information theory.", "supply credit information theory.", "supply side information theory.", "supply case information theory."

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("export data international efforts.") or ("supply trade information theory."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("export data international efforts.") OR ("supply trade information theory.")).
• Removing quotes may allow a broader search: (( export data international efforts. ) or ( supply trade information theory. )).
• Adding a wildcard symbol may retrieve word variants: (("export data international efforts.") or ("supply trade information theory."))*.