Perhaps you should try some spelling variations:
"improving contract performance measures." » "improving country performance measures.", "improving court performance measures.", "improving corporate performance measures.", "improve contract performance measures.", "improving central performance measures.", "improving coverage performance measures."
"improving fdi performance based." » "improving do performance based.", "improving ii performance based.", "improving funds performance based.", "improving food performance based.", "improving feed performance based.", "improving rail performance based."

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

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