Perhaps you should try some spelling variations:
"import duty integration efforts." » "import duty international efforts.", "import duty conservation efforts.", "import data integration efforts.", "import deep integration efforts.", "import eu integration efforts.", "import duties integration efforts."
"import south integration efforts." » "import south international efforts.", "import south conservation efforts.", "import through integration efforts.", "import social integration efforts.", "import sector integration efforts.", "import growth integration efforts.", "import source integration efforts.", "support south 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 south integration efforts."))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"import duty integration efforts.\") OR (\"import south integration efforts.\"))".
• Removing quotes may allow a broader search: (( import duty integration efforts. ) OR ( import south integration efforts. )).
• Adding a wildcard symbol may retrieve word variants: (("import duty integration efforts.") OR ("import south integration efforts."))*.