Perhaps you should try some spelling variations:
"improve contract performance series." » "improve country performance series.", "improve court performance series.", "improve corporate performance series.", "improve contract performance metrics.", "improve contract performance reviews.", "improve contract performance targets."
"improving loan performance review." » "improving loan performance risk.", "improving loan performance evidence.", "improving poor performance review.", "improving bank performance review.", "improving _ performance review.", "improving local performance review.", "improving land performance review.", "improving road performance review."

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

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