Perhaps you should try some spelling variations:
"improving pupil performance metrics." » "improving pupil performance measures.", "improving model performance metrics.", "improving judicial performance metrics.", "improving public performance metrics.", "improving civil performance metrics.", "improving audit performance metrics."
"improving social performance review." » "improving school performance review.", "improving fiscal performance review.", "improving financial performance review.", "improving social performance risk.", "improving social performance evidence."

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

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