Perhaps you should try some spelling variations:
"borrowing country performance review." » "borrowing country performance risk.", "borrowing country performance evidence.", "borrowing countries performance review.", "borrowing costs performance review.", "borrowing cost performance review."
"improving poor performance series." » "improving poor performance metrics.", "improving poor performance reviews.", "improving poor performance targets.", "improving export performance series.", "improving sector performance series.", "improving _ performance series.", "improving power performance series.", "improving food performance series.", "improving indoor performance series."

Try widening your search to All Fields.

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• Performing a fuzzy search may retrieve terms with similar spellings: (("borrowing country performance review.") or ("improving poor performance series."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("borrowing country performance review.") OR ("improving poor performance series.")).
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