Perhaps you should try some spelling variations:
"improving poor performance metrics." » "improving poor performance contracts.", "improving poor performance measures.", "improving poor performance contract.", "improving export performance metrics.", "improving sector performance metrics.", "improving _ performance metrics.", "improving power performance metrics.", "improving food performance metrics.", "improving indoor performance metrics."
"improving trade performance series." » "improving trade performance reviews.", "improving trade performance review.", "improving trade performance targets.", "improving road performance series.", "improving tax performance series.", "improving teacher 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: (("improving trade performance series.") or ("improving poor performance metrics."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("improving trade performance series.") OR ("improving poor performance metrics.")).
• Removing quotes may allow a broader search: (( improving trade performance series. ) or ( improving poor performance metrics. )).
• Adding a wildcard symbol may retrieve word variants: (("improving trade performance series.") or ("improving poor performance metrics."))*.