Perhaps you should try some spelling variations:
"import duty integration efforts." » "import duty international efforts.", "import duty conservation efforts.", "import dutch integration efforts.", "import data integration efforts.", "import why integration efforts.", "import duties integration efforts."
"support south integration efforts." » "support south international efforts.", "support south conservation efforts.", "support youth integration efforts.", "support about integration efforts.", "support dutch integration efforts.", "report south integration efforts.", "supply south integration efforts.", "support state 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 ("support south integration efforts."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("import duty integration efforts.") OR ("support south integration efforts.")).
• Removing quotes may allow a broader search: (( import duty integration efforts. ) or ( support south integration efforts. )).
• Adding a wildcard symbol may retrieve word variants: (("import duty integration efforts.") or ("support south integration efforts."))*.