Perhaps you should try some spelling variations:
"improving thermal performance reviews." » "improving thermal performance review.", "improving thermal performance reports.", "improving thermal performance risks.", "improving external performance reviews.", "improving animal performance reviews.", "improving erm performance reviews."
"improving loan performance measures." » "improving local performance measures.", "improving land performance measures.", "improving lead 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 thermal performance reviews.") OR ("improving loan performance measures."))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"improving thermal performance reviews.\") OR (\"improving loan performance measures.\"))".
• Removing quotes may allow a broader search: (( improving thermal performance reviews. ) OR ( improving loan performance measures. )).
• Adding a wildcard symbol may retrieve word variants: (("improving thermal performance reviews.") OR ("improving loan performance measures."))*.