Perhaps you should try some spelling variations:
"improving basic performance metrics." » "improving basic performance measures.", "improving based performance metrics.", "improving music performance metrics.", "improving baseline performance metrics.", "improving air performance metrics.", "improve basic performance metrics."
"improving past performance risk." » "improving plant performance risk.", "improving port performance risk.", "improving transit performance risk.", "improving past performance 2019.", "improving fast performance risk.", "improving post performance risk."

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

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