Perhaps you should try some spelling variations:
"borrowing country performance series." » "borrowing country performance studies.", "borrowing country performance size.", "borrowing countries performance series.", "borrowing costs performance series.", "borrowing cost performance series."
"improving company performance evidence." » "improve company performance evidence.", "improving compliance performance evidence.", "improving community 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: (("borrowing country performance series.") or ("improving company performance evidence."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("borrowing country performance series.") OR ("improving company performance evidence.")).
• Removing quotes may allow a broader search: (( borrowing country performance series. ) or ( improving company performance evidence. )).
• Adding a wildcard symbol may retrieve word variants: (("borrowing country performance series.") or ("improving company performance evidence."))*.