Perhaps you should try some spelling variations:
"global environment performance series." » "global environmental performance series.", "global environmental performances series.", "global investment performance series.", "global environment performance studies.", "global environment performance size."
"global government performance review." » "global environmental performance review.", "global government performance risk.", "global government performance evidence.", "local government performance review.", "local governments performance review.", "total government performance review."

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