Perhaps you should try some spelling variations:
"improving job performance metrics." » "improving job performance contracts.", "improving job performance measures.", "improving job performance contract.", "improving poor performance metrics.", "improving loan performance metrics.", "improving port performance metrics.", "improving co performance metrics.", "improving food performance metrics.", "improving road 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 job performance metrics."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("improving trade performance series.") OR ("improving job performance metrics.")).
• Removing quotes may allow a broader search: (( improving trade performance series. ) or ( improving job performance metrics. )).
• Adding a wildcard symbol may retrieve word variants: (("improving trade performance series.") or ("improving job performance metrics."))*.