Perhaps you should try some spelling variations:
"support large irrigation schemes." » "support large irrigation scheme.", "support large irrigation systems.", "support farm irrigation schemes.", "support drip irrigation schemes.", "support scale irrigation schemes."
"support facto integration series." » "support facto integration theories.", "support facto integrating services.", "support facto integration schemes.", "support factor integration series.", "support faculty integration series.", "support sector integration series.", "support falls integration series.", "support data integration series.", "support facility integration series."

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

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