Perhaps you should try some spelling variations:
"improving farmers performance risk." » "improving firms performance risk.", "improving markets performance risk.", "improving workers performance risk.", "improving access performance risk.", "improving care performance risk.", "improving farmers performance 2019."
"improving sector performance evidence." » "improve sector performance evidence.", "improving eco performance evidence.", "improving sewer performance evidence."

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

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