Perhaps you should try some spelling variations:
"support grid integration schemes." » "support grid integration schengen.", "support grid irrigation schemes.", "support grid integration regimes.", "support agri integration schemes.", "support grant integration schemes.", "support group integration schemes."
"supply syria irrigation system." » "supply syria irrigation systems.", "supply syria irrigation water.", "supply syria irrigation scheme.", "supply africa irrigation system.", "supply drip irrigation system.", "supply surge irrigation system.", "supply social irrigation system.", "supply sierra irrigation system."

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

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