Perhaps you should try some spelling variations:
"improving level performance contracts." » "improving model performance contracts.", "improving revenue performance contracts.", "improving pupil performance contracts.", "improving legal performance contracts.", "improving lives performance contracts.", "improving local performance contracts."
"improving poor performance targets." » "improving sector performance targets.", "improving power performance targets.", "improving food performance targets.", "improving peer performance targets."

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

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