Perhaps you should try some spelling variations:
"support plans integration efforts." » "support plans international efforts.", "support plans conservation efforts.", "support means integration efforts.", "support banlkans integration efforts.", "support keegans integration efforts.", "support land integration efforts.", "support place integration efforts.", "support pilots integration efforts."
"import duty irrigation schemes." » "import duty irrigation scheme.", "import duty irrigation systems.", "import delta irrigation schemes.", "import drip irrigation schemes.", "import pump irrigation schemes.", "import duties 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 duty irrigation schemes.") or ("support plans integration efforts."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("import duty irrigation schemes.") OR ("support plans integration efforts.")).
• Removing quotes may allow a broader search: (( import duty irrigation schemes. ) or ( support plans integration efforts. )).
• Adding a wildcard symbol may retrieve word variants: (("import duty irrigation schemes.") or ("support plans integration efforts."))*.