Perhaps you should try some spelling variations:
"improving crop performance contracts." » "improving group performance contracts.", "improving top performance contracts.", "improving do performance contracts.", "improving pro performance contracts.", "improving macro performance contracts.", "improving food performance contracts."
"improving co performance targets." » "improving ceo performance targets.", "improving do performance targets.", "improving core performance targets.", "improving eco performance targets.", "improving ict performance targets.", "improving pro performance targets."

Try widening your search to All Fields.

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