Perhaps you should try some spelling variations:
"global environment governance system." » "global environmental governance system.", "global evironmental governance system.", "global environment government system."
"legal enforcement governance issues." » "legal efficient governance issues.", "legal empowerment governance issues.", "law enforcement governance issues.", "weak enforcement governance issues.", "legal environment 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 system.") OR ("legal enforcement governance issues."))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"global environment governance system.\") OR (\"legal enforcement governance issues.\"))".
• Removing quotes may allow a broader search: (( global environment governance system. ) OR ( legal enforcement governance issues. )).
• Adding a wildcard symbol may retrieve word variants: (("global environment governance system.") OR ("legal enforcement governance issues."))*.