Perhaps you should try some spelling variations:
"export data irrigation schemes." » "export data irrigation scheme.", "export data irrigation systems.", "export canal irrigation schemes.", "export water irrigation schemes.", "export spate irrigation schemes.", "export day irrigation schemes.", "import data irrigation schemes.", "export ratio irrigation schemes."
"support grant integration series." » "support grant integration theories.", "support grant integrating services.", "support grant integration schemes.", "support migrant integration series.", "support trade integration series.", "support grid integration series."

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

• If you are trying to use Boolean operators, they must be ALL CAPS: (("export data irrigation schemes.") OR ("support grant integration series."))~.
• Removing quotes may allow a broader search: (( export data irrigation schemes. ) or ( support grant integration series. ))~.
• Adding a wildcard symbol may retrieve word variants: (("export data irrigation schemes.") or ("support grant integration series."))*.