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