Perhaps you should try some spelling variations:
"improving rural performance contract." » "improving rural performance contracts.", "improving pupil performance contract.", "improving thermal performance contract.", "improving overall performance contract.", "improving urban performance contract.", "improving social performance contract."
"improving rural performance risk." » "improving pupil performance risk.", "improving thermal performance risk.", "improving overall performance risk.", "improving rural performance size.", "improving rural performance based.", "improving rural performance _.", "improving urban performance risk.", "improving social performance risk."

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 risk.") or ("improving rural performance contract."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("improving rural performance risk.") OR ("improving rural performance contract.")).
• Removing quotes may allow a broader search: (( improving rural performance risk. ) or ( improving rural performance contract. )).
• Adding a wildcard symbol may retrieve word variants: (("improving rural performance risk.") or ("improving rural performance contract."))*.