Perhaps you should try some spelling variations:
"improving urban performance contract." » "improving urban performance contracts.", "improving bank performance contract.", "improving loan performance contract.", "improving human performance contract."
"improving thermal performance review." » "improving thermal performance risk.", "improving thermal performance evidence.", "improving external performance review.", "improving animal performance review.", "improving erm 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: (("improving thermal performance review.") or ("improving urban performance contract."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("improving thermal performance review.") OR ("improving urban performance contract.")).
• Removing quotes may allow a broader search: (( improving thermal performance review. ) or ( improving urban performance contract. )).
• Adding a wildcard symbol may retrieve word variants: (("improving thermal performance review.") or ("improving urban performance contract."))*.