Perhaps you should try some spelling variations:
"improving farmers performance contracts." » "improving firms performance contracts.", "improving markets performance contracts.", "improving workers performance contracts.", "improving access performance contracts.", "improving care performance contracts."
"improving loan performance evidence." » "improving local performance evidence.", "improving land performance evidence.", "improving lead performance evidence."

Try widening your search to All Fields.

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