Perhaps you should try some spelling variations:
"improve water integrating policies." » "improve water international policies.", "improve water integrating countries.", "improve water immigration policies.", "improve water integrated policies.", "improve market integrating policies.", "improve gaps integrating policies.", "improving water integrating policies."
"import data integration series." » "import data integration theories.", "import data integrating services.", "import data integration schemes.", "import trade integration series.", "import _ integration series.", "import data integrity series.", "import duty integration series."

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("import data integration series.") or ("improve water integrating policies."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("import data integration series.") OR ("improve water integrating policies."))*.
• Removing quotes may allow a broader search: (( import data integration series. ) or ( improve water integrating policies. ))*.