Perhaps you should try some spelling variations:
"supply chain international security." » "supply chain international community.", "supply chain national security.", "supply chain international studies.", "supply chains international security.", "supply main international security.", "supply can international security."
"supply scale irrigation schemes." » "supply scale irrigation scheme.", "supply scale irrigation systems.", "supply case irrigation schemes.", "supply scheme irrigation schemes.", "supply social 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 chain international security.") or ("supply scale irrigation schemes."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("supply chain international security.") OR ("supply scale irrigation schemes."))*.
• Removing quotes may allow a broader search: (( supply chain international security. ) or ( supply scale irrigation schemes. ))*.