Perhaps you should try some spelling variations:
"improving food performance metrics." » "improving food performance contracts.", "improving food performance measures.", "improving food performance contract.", "improving good performance metrics.", "improving poor performance metrics.", "improving fund performance metrics.", "improving land performance metrics."
"improving care performance series." » "improving care performance reviews.", "improving care performance review.", "improving care performance targets.", "improving market performance series.", "improving trade performance series.", "improving court performance series.", "improving water performance series.", "improving early performance series.", "improving land performance series."

Try widening your search to All Fields.

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• Performing a fuzzy search may retrieve terms with similar spellings: (("improving care performance series.") or ("improving food performance metrics."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("improving care performance series.") OR ("improving food performance metrics.")).
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