Perhaps you should try some spelling variations:
"global environment performance contract." » "global environmental performance contract.", "global environmental performances contract.", "global investment performance contract.", "global environment performance contracts."
"legal government performance review." » "legal environmental performance review.", "legal government performance risk.", "legal government performance evidence.", "local government performance review.", "local governments performance review.", "level governments 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: (("legal government performance review.") OR ("global environment performance contract."))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"legal government performance review.\") OR (\"global environment performance contract.\"))".
• Removing quotes may allow a broader search: (( legal government performance review. ) OR ( global environment performance contract. )).
• Adding a wildcard symbol may retrieve word variants: (("legal government performance review.") OR ("global environment performance contract."))*.