Perhaps you should try some spelling variations:
"improving overall performance metrics." » "improving average performance metrics.", "improving thermal performance metrics.", "improving governance performance metrics.", "improving overall performance contracts.", "improving overall performance measures.", "improving overall performance contract.", "improving coverage performance metrics.", "improving poverty performance metrics.", "improving rail performance metrics."
"improving rural performance review." » "improving rural performance risk.", "improving rural performance evidence.", "improving pupil performance review.", "improving thermal performance review.", "improving fiscal performance review.", "improving urban performance review.", "improving social performance review."

Try widening your search to All Fields.

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

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