Perhaps you should try some spelling variations:
wang dong » wang yong, wang hong, wang yang
best when » best what, debt when, text when
bent when » debt when, text when, benefit when
using sar » using sat, using svr, using smart
yang jui » yang judy, yang di, yang yi
yang li » yang lin, yang di, yang yi
yang xi » yang di, yang yi

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

• Performing a fuzzy search may retrieve terms with similar spellings: wang dong ((((yang li) OR (yang xi))) or (yang jui)) ((best when) or (bent when)) when using sar ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wang dong ((((yang li) OR (yang xi))) OR (yang jui)) ((best when) OR (bent when)) when using sar ;.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang dong ((((yang li) OR (yang xi))) or (yang jui)) ((best when) or (bent when)) when using sar ;".
• Adding a wildcard symbol may retrieve word variants: wang dong ((((yang li) OR (yang xi))) or (yang jui)) ((best when) or (bent when)) when using sar ;*.