Perhaps you should try some spelling variations:
"supply china international poverty." » "supply china national poverty.", "supply china international best.", "supply chains international poverty.", "supply chain international poverty."
"supply data integration theories." » "supply data integration theory.", "supply data integration through.", "supply data integration efforts.", "supply trade integration theories.", "supply _ integration theories.", "supply data integrity theories.", "supply water integration theories."

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 poverty.") or ("supply data integration theories."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("supply china international poverty.") OR ("supply data integration theories.")).
• Removing quotes may allow a broader search: (( supply china international poverty. ) or ( supply data integration theories. )).
• Adding a wildcard symbol may retrieve word variants: (("supply china international poverty.") or ("supply data integration theories."))*.