Perhaps you should try some spelling variations:
"support grant integration volume." » "support grant integration policy.", "support migrant integration volume.", "support trade integration volume.", "support grid integration volume."
"support crop irrigation schemes." » "support crop irrigation scheme.", "support crop irrigation systems.", "support drip irrigation schemes.", "support scale irrigation schemes.", "support canal irrigation schemes.", "support crops irrigation schemes.", "support group irrigation schemes.", "support cross irrigation schemes."

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

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