Perhaps you should try some spelling variations:
"improving statistics performance metrics." » "improving statistical performance metrics.", "improving logistics performance metrics.", "improving logistic performance metrics.", "import statistics performance metrics.", "improving statistics performance contracts.", "improving statistics performance measures.", "improving statistics performance contract."
"improving past performance risk." » "improving plant performance risk.", "improving port performance risk.", "improving based performance risk.", "improving past performance size.", "improving past performance based.", "improving past performance _.", "improving basic performance risk.", "improving asset performance risk.", "improving land 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 statistics performance metrics.") or ("improving past performance risk."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("improving statistics performance metrics.") OR ("improving past performance risk.")).
• Removing quotes may allow a broader search: (( improving statistics performance metrics. ) or ( improving past performance risk. )).
• Adding a wildcard symbol may retrieve word variants: (("improving statistics performance metrics.") or ("improving past performance risk."))*.