Perhaps you should try some spelling variations:
"improving rural performance contract." » "improving rural performance contracts.", "improving euract performance contract.", "improving larval performance contract.", "improving pupil performance contract."
"improving overall performance review." » "improving average performance review.", "improving thermal performance review.", "improving governance performance review.", "improving overall performance risk.", "improving overall performance evidence.", "improving coverage performance review.", "improving federal performance review.", "improving neural 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 overall performance review.") or ("improving rural performance contract."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("improving overall performance review.") OR ("improving rural performance contract.")).
• Removing quotes may allow a broader search: (( improving overall performance review. ) or ( improving rural performance contract. )).
• Adding a wildcard symbol may retrieve word variants: (("improving overall performance review.") or ("improving rural performance contract."))*.