Perhaps you should try some spelling variations:
"import business integration efforts." » "import business interruption efforts.", "import business interactions efforts.", "import business information efforts.", "import business international efforts.", "import business conservation efforts.", "airport business integration efforts.", "port business integration efforts.", "importing business integration efforts."
"import duty integration efforts." » "import duty international efforts.", "import duty conservation efforts.", "import data integration efforts.", "import south integration efforts.", "import deep integration efforts.", "import duties integration efforts."

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 integration efforts.") or ("import business integration efforts."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("import duty integration efforts.") OR ("import business integration efforts.")).
• Removing quotes may allow a broader search: (( import duty integration efforts. ) or ( import business integration efforts. )).
• Adding a wildcard symbol may retrieve word variants: (("import duty integration efforts.") or ("import business integration efforts."))*.