Perhaps you should try some spelling variations:
"global environment performance system." » "global environmental performance system.", "global environmental performances system.", "global government performance system.", "global environment performance states.", "global environment performance sse3.", "global environment performance instead."
"global environment governance system." » "global environmental governance system.", "global evironmental governance system.", "global environment government system."

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 ("global environment performance system."))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"global environment governance system.\") OR (\"global environment performance system.\"))".
• Removing quotes may allow a broader search: (( global environment governance system. ) OR ( global environment performance system. )).
• Adding a wildcard symbol may retrieve word variants: (("global environment governance system.") OR ("global environment performance system."))*.