Perhaps you should try some spelling variations:
"supply china international economics." » "supply iea international economics.", "supply action international economics.", "supply finance international economics.", "supply chains international economics.", "supply chain international economics.", "supply china international economic."
"supply based international prices." » "supply land international prices.", "supply 2nd international prices.", "supply 3rd international prices.", "supply case international prices.", "supplies based international prices.", "supply asia international prices.", "supply based international price."

Try widening your search to All Fields.

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

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