Perhaps you should try some spelling variations:
"supply farm irrigation schemes." » "supply farm irrigation scheme.", "supply farm irrigation systems.", "supply scale irrigation schemes.", "supply canal irrigation schemes.", "supply from irrigation schemes.", "support farm irrigation schemes."
"supply second integration series." » "supply second iteration series.", "supply beyond integration series.", "supply sector integration series.", "supply second integration services.", "supply second interaction series.", "supply second integration server.", "support second integration series.", "supply demand integration series."

Try widening your search to All Fields.

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

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