Perhaps you should try some spelling variations:
"improving do performance metrics." » "improving do performance measures.", "improving di performance metrics.", "improving 2 performance metrics.", "improving 3 performance metrics.", "improving co performance metrics.", "improving eco performance metrics.", "improving pro performance metrics."
"emerging export performance series." » "emerging export performance studies.", "emerging export performance size.", "leveraging export performance series.", "emerging empire performance series.", "emerging empires performance series."

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("emerging export performance series.") or ("improving do performance metrics."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("emerging export performance series.") OR ("improving do performance metrics."))*.
• Removing quotes may allow a broader search: (( emerging export performance series. ) or ( improving do performance metrics. ))*.