Perhaps you should try some spelling variations:
"supply china international poverty." » "supply china national poverty.", "supply iea international poverty.", "supply action international poverty.", "supply finance international poverty.", "supply chains international poverty.", "supply chain international poverty."
"supply water integration schemes." » "supply water integration schengen.", "supply water irrigation schemes.", "supply water integration regimes.", "supply water integrating schemes.", "supply factor integration schemes.", "supply filter integration schemes."

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• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"supply china international poverty.\") OR (\"supply water integration schemes.\"))~".
• Removing quotes may allow a broader search: (( supply china international poverty. ) OR ( supply water integration schemes. ))~.
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