Perhaps you should try some spelling variations:
"supply poverty international social." » "supply policy international social.", "supply security international social.", "supply poverty interventions social.", "supply poverty international society.", "supply poverty international sourcing.", "supply poverty international seminar."
"supply spate irrigation schemes." » "supply spate irrigation scheme.", "supply spate irrigation systems.", "supply scale irrigation schemes.", "supply water irrigation schemes.", "supply surge irrigation schemes.", "supply system irrigation schemes.", "supply side irrigation schemes."

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

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