Perhaps you should try some spelling variations:
"global environment performance risks." » "global environmental performances risks.", "global government performance risks.", "global investment performance risks.", "global environment performance risk.", "global environment performance issues.", "global environment performance based."
"global environmental performance evidence." » "legal environment performance evidence."

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