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

Try widening your search to All Fields.

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