Perhaps you should try some spelling variations:
"real investment performance based." » "real government performance based.", "real investment performance measures.", "rural investment performance based.", "total investment performance based.", "direct investment performance based."
"global environmental performance reports." » "global environment performance reports.", "legal environment performance reports.", "global environmental performance measures."

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("real investment performance based.") or ("global environmental performance reports."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("real investment performance based.") OR ("global environmental performance reports.")).
• Removing quotes may allow a broader search: (( real investment performance based. ) or ( global environmental performance reports. )).
• Adding a wildcard symbol may retrieve word variants: (("real investment performance based.") or ("global environmental performance reports."))*.