Perhaps you should try some spelling variations:
"improving country performance evidence." » "improving voluntary performance evidence.", "importing country performance evidence.", "improving community performance evidence."
"improve care performance risk." » "improve care performance 2019.", "improve trade performance risk.", "improve drive performance risk.", "improve 2 performance risk.", "improving care performance risk.", "improve farmer performance risk.", "improve early performance risk."

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

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