Perhaps you should try some spelling variations:
"improving chain performance studies." » "improving chain performance audits.", "improving chain performance audit.", "improving chain performance standards.", "improving managing performance studies.", "improving brain performance studies.", "improving caring performance studies.", "improving air performance studies."
"improving loan performance reviews." » "improving loan performance review.", "improving loan performance reports.", "improving loan performance risks.", "improving local performance reviews.", "improving land performance reviews.", "improving lead performance reviews."

Try widening your search to All Fields.

You may be able to get more results by adjusting your search query.

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