Perhaps you should try some spelling variations:
"improving trade performance reviews." » "improving trade performance review.", "improving trade performance reports.", "improving trade performance risks.", "improving road performance reviews.", "improving tax performance reviews.", "improving teacher performance reviews."
"improving good performance measures." » "improving poor performance measures.", "improving loan performance measures.", "improving fund performance measures.", "improving food performance measures.", "improving road performance measures.", "improving land performance measures."

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

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