Perhaps you should try some spelling variations:
"global environment governance series." » "global environmental governance series.", "global investment governance series.", "global environment governance issues."
"global enforcement governance system." » "global empowerment governance system.", "global environmental governance system.", "legal enforcement governance system.", "law enforcement governance system.", "global engagement governance system.", "global enforcement governance 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 environment governance series.") or ("global enforcement governance system."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("global environment governance series.") OR ("global enforcement governance system.")).
• Removing quotes may allow a broader search: (( global environment governance series. ) or ( global enforcement governance system. )).
• Adding a wildcard symbol may retrieve word variants: (("global environment governance series.") or ("global enforcement governance system."))*.