Perhaps you should try some spelling variations:
"legal environmental performance metrics." » "legal environment performance metrics.", "legal environments performance metrics.", "local environmental performance metrics.", "legal environmental performance measures."
"global government performance series." » "global government performance studies.", "global government performance size.", "local government performance series.", "local governments performance series.", "total government performance series."

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (("global government performance series.") OR ("legal environmental performance metrics."))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"global government performance series.\") OR (\"legal environmental performance metrics.\"))".
• Removing quotes may allow a broader search: (( global government performance series. ) OR ( legal environmental performance metrics. )).
• Adding a wildcard symbol may retrieve word variants: (("global government performance series.") OR ("legal environmental performance metrics."))*.