Perhaps you should try some spelling variations:
"improving co performance metrics." » "improving co performance measures.", "improving ceo performance metrics.", "improving do performance metrics.", "improving core performance metrics.", "improving eco performance metrics.", "improving crop performance metrics.", "improving ict performance metrics."
"improving care performance risks." » "improving care performance risk.", "improving trade performance risks.", "improving drive performance risks.", "improving 2 performance risks.", "improving early performance risks.", "improving air performance risks.", "improving data performance risks."

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("improving care performance risks.") or ("improving co performance metrics."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("improving care performance risks.") OR ("improving co performance metrics.")).
• Removing quotes may allow a broader search: (( improving care performance risks. ) or ( improving co performance metrics. )).
• Adding a wildcard symbol may retrieve word variants: (("improving care performance risks.") or ("improving co performance metrics."))*.