Perhaps you should try some spelling variations:
"support migrant integration countries." » "support migrant integrating countries.", "support migrant immigration countries.", "support migrant emigration countries.", "support market integration countries.", "support grant integration countries."
"import duty integration through." » "import duty innovation through.", "import data integration through.", "import south integration through.", "import deep integration through.", "import duties integration through."

You may be able to get more results by adjusting your search query.

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