Perhaps you should try some spelling variations:
"improving loan performance contract." » "improving loan performance contracts.", "improving poor performance contract.", "improving bank performance contract.", "improving _ performance contract.", "improving local performance contract.", "improving land performance contract.", "improving road performance contract."
"improving farmers performance series." » "improving firms performance series.", "improving markets performance series.", "improving workers performance series.", "improving farmers performance metrics.", "improving farmers performance reviews.", "improving farmers performance review.", "improving access performance series.", "improving water performance series.", "improving market performance series."

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("improving loan performance contract.") OR ("improving farmers performance series."))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"improving loan performance contract.\") OR (\"improving farmers performance series.\"))*".
• Removing quotes may allow a broader search: (( improving loan performance contract. ) OR ( improving farmers performance series. ))*.