Perhaps you should try some spelling variations:
"improving average performance contract." » "improving average performance contracts.", "improving trade performance contract.", "improving energy performance contract.", "improving governance performance contract.", "improving coverage performance contract.", "improving sewerage performance contract.", "moving average performance contract."
"improving urban performance series." » "improving urban performance metrics.", "improving urban performance reviews.", "improving urban performance review.", "improving bank performance series.", "improving loan performance series.", "improving can performance series."

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• Performing a fuzzy search may retrieve terms with similar spellings: (("improving urban performance series.") or ("improving average performance contract."))~.
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