Perhaps you should try some spelling variations:
"legal environment performance targets." » "legal environmental performances targets.", "legal government performance targets.", "legal investment performance targets.", "global environment performance targets."
"level environmental performance contracts." » "local environmental performance contracts.", "global environmental performance contracts.", "rural environmental performance contracts."

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("level environmental performance contracts.") or ("legal environment performance targets."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("level environmental performance contracts.") OR ("legal environment performance targets."))*.
• Removing quotes may allow a broader search: (( level environmental performance contracts. ) or ( legal environment performance targets. ))*.