Perhaps you should try some spelling variations:
"improving level performance contracts." » "improving revenue performance contracts.", "improving key performance contracts.", "improving pupil performance contracts.", "improving local performance contracts.", "improving civil performance contracts.", "improving beef performance contracts."
"improving loan performance targets." » "improving poor performance targets.", "improving bank performance targets.", "improving _ performance targets.", "improving local performance targets.", "improving land performance targets.", "improving road performance targets."

Try widening your search to All Fields.

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• Performing a fuzzy search may retrieve terms with similar spellings: (("improving loan performance targets.") or ("improving level performance contracts."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("improving loan performance targets.") OR ("improving level performance contracts.")).
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