Perhaps you should try some spelling variations:
"global environmental performance 2019." » "global environment performance 2019.", "global environmental performance _.", "global environmental performance a."
"legal environmental policy frames." » "legal environment policy frames.", "legal environments policy frames.", "local environmental policy frames.", "legal environmental policy framing.", "legal environmental policy from.", "legal environmental policy france."

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

• If you are trying to use Boolean operators, they must be ALL CAPS: (("global environmental performance 2019.") OR ("legal environmental policy frames."))~.
• Removing quotes may allow a broader search: (( global environmental performance 2019. ) or ( legal environmental policy frames. ))~.
• Adding a wildcard symbol may retrieve word variants: (("global environmental performance 2019.") or ("legal environmental policy frames."))*.