Perhaps you should try some spelling variations:
"global environmental governance series." » "global environment governance series.", "legal environment governance series.", "global environmental governance issues.", "global environmental governance system."
"Global environmental performance system." » "Global environmental performance based.", "Global environmental performance size.", "Global environmental performance issues."

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