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

Try widening your search to All Fields.

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 environment performance contracts."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("global government performance series.") OR ("legal environment performance contracts.")).
• Removing quotes may allow a broader search: (( global government performance series. ) or ( legal environment performance contracts. )).
• Adding a wildcard symbol may retrieve word variants: (("global government performance series.") or ("legal environment performance contracts."))*.