Perhaps you should try some spelling variations:
"improving thermal performance targets." » "improving external performance targets.", "improving animal performance targets.", "improving erm performance targets."
"improving chain performance risks." » "improving loan performance risks.", "improving managing performance risks.", "improving chain performance risk.", "improving brain performance risks.", "improving caring performance risks.", "improving air performance risks."

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 targets.") or ("improving chain performance risks."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("improving thermal performance targets.") OR ("improving chain performance risks."))*.
• Removing quotes may allow a broader search: (( improving thermal performance targets. ) or ( improving chain performance risks. ))*.