Perhaps you should try some spelling variations:
"improving sharia performances based." » "improving sharing performance based.", "improving thermal performances based.", "improving art performances based.", "improving sharia performance based.", "improving sharia performance case.", "improving sharia performances de.", "improving shared performances based.", "improving spatial performances based.", "improving static performances based."
"improving urban performance series." » "improving urban performance studies.", "improving urban performance size.", "improving bank performance series.", "improving loan performance series.", "improving human performance series."

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

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