Perhaps you should try some spelling variations:
"global environmental governance issues." » "global environmental performance issues."
"global environment performance series." » "global environmental performance series.", "global environmental performances series.", "global government performance series.", "global environment performance studies.", "global environment performance size."

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("global environment performance series.") or ("global environmental governance issues."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("global environment performance series.") OR ("global environmental governance issues."))*.
• Removing quotes may allow a broader search: (( global environment performance series. ) or ( global environmental governance issues. ))*.