Perhaps you should try some spelling variations:
"improving loan performance studies." » "improving loan performance audits.", "improving loan performance audit.", "improving loan performance standards.", "improving local performance studies.", "improving land performance studies.", "improving lead performance studies."
"improving urban performance review." » "improving urban performance risk.", "improving urban performance evidence.", "improving bank performance review.", "improving human performance review.", "improving can performance review."

Try widening your search to All Fields.

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• Performing a fuzzy search may retrieve terms with similar spellings: (("improving urban performance review.") or ("improving loan performance studies."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("improving urban performance review.") OR ("improving loan performance studies.")).
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• Adding a wildcard symbol may retrieve word variants: (("improving urban performance review.") or ("improving loan performance studies."))*.