Perhaps you should try some spelling variations:
"improving thermal performance reviews." » "improving thermal performance review.", "improving thermal performance reports.", "improving thermal performance risks.", "improving maternal performance reviews.", "improving rural performance reviews.", "improving human performance reviews."
"improving loan performance metrics." » "improving loan performance contracts.", "improving loan performance measures.", "improving loan performance contract.", "improving poor performance metrics.", "improving bank performance metrics.", "improving _ performance metrics.", "improving local performance metrics.", "improving land performance metrics.", "improving road performance metrics."

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("improving thermal performance reviews.") OR ("improving loan performance metrics."))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"improving thermal performance reviews.\") OR (\"improving loan performance metrics.\"))".
• Removing quotes may allow a broader search: (( improving thermal performance reviews. ) OR ( improving loan performance metrics. )).
• Adding a wildcard symbol may retrieve word variants: (("improving thermal performance reviews.") OR ("improving loan performance metrics."))*.