Perhaps you should try some spelling variations:
"supply canal irrigation schemes." » "supply canal irrigation scheme.", "supply canal irrigation systems.", "supply scale irrigation schemes.", "supply canada irrigation schemes.", "supply annual irrigation schemes.", "supply china irrigation schemes."
"supply fare integration south." » "supply fare integration study.", "supply fare integration some.", "supply fare integration social.", "supply trade integration south.", "supply die integration south.", "supply farm integration south.", "supply case integration south.", "supply figure integration south."

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("supply fare integration south.") or ("supply canal irrigation schemes."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("supply fare integration south.") OR ("supply canal irrigation schemes."))*.
• Removing quotes may allow a broader search: (( supply fare integration south. ) or ( supply canal irrigation schemes. ))*.