Perhaps you should try some spelling variations:
"national environmental performances series." » "national environmental priorities series.", "national environmental forces series.", "nations environment performances series.", "natural environment performances series.", "national environmental performance series.", "national environmental performance merits.", "national environmental performance studies."
"global environmental performance reviews." » "global environment performance reviews.", "global environmental performance review.", "global environmental performance reports.", "global environmental performance risks."

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: (("global environmental performance reviews.") or ("national environmental performances series."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("global environmental performance reviews.") OR ("national environmental performances series.")).
• Removing quotes may allow a broader search: (( global environmental performance reviews. ) or ( national environmental performances series. )).
• Adding a wildcard symbol may retrieve word variants: (("global environmental performance reviews.") or ("national environmental performances series."))*.