Perhaps you should try some spelling variations:
"import trade integration schemes." » "import trade integration schengen.", "import trade integration regimes.", "import trade integration some.", "export trade integration schemes.", "import price integration schemes.", "import taxes integration schemes."
"support grid irrigation schemes." » "support grid irrigation scheme.", "support grid irrigation systems.", "support grain irrigation schemes.", "support drip irrigation schemes.", "support gray irrigation schemes.", "support agri irrigation schemes.", "support grant irrigation schemes.", "support group 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: (("import trade integration schemes.") or ("support grid irrigation schemes."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("import trade integration schemes.") OR ("support grid irrigation schemes."))*.
• Removing quotes may allow a broader search: (( import trade integration schemes. ) or ( support grid irrigation schemes. ))*.