Perhaps you should try some spelling variations:
"legal environment performances series." » "legal environment performance series.", "legal environmental performances series.", "legal government performance series.", "legal environment performance review.", "legal environment performance metrics.", "legal environment performance reviews.", "global environment performances series."
"legal environmental performance contract." » "legal environmental performance contracts.", "legal environments performance contract.", "local environmental performance contract.", "level environmental performance contract.", "global environmental performance contract."

Try widening your search to All Fields.

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• Performing a fuzzy search may retrieve terms with similar spellings: (("legal environmental performance contract.") or ("legal environment performances series."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("legal environmental performance contract.") OR ("legal environment performances series.")).
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• Adding a wildcard symbol may retrieve word variants: (("legal environmental performance contract.") or ("legal environment performances series."))*.