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