Perhaps you should try some spelling variations:
"import price integration schemes." » "import price integration schengen.", "import price integration regimes.", "import price integration some.", "import service integration schemes.", "import trade integration schemes.", "import price indexation schemes.", "import prices integration schemes.", "export price integration schemes.", "export prices integration schemes."
"export base irrigation schemes." » "export base irrigation scheme.", "export base irrigation systems.", "export basin irrigation schemes.", "export use irrigation schemes.", "export scale irrigation schemes."

Try widening your search to All Fields.

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• Performing a fuzzy search may retrieve terms with similar spellings: (("import price integration schemes.") or ("export base irrigation schemes."))~.
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