Perhaps you should try some spelling variations:
wang yang » wang yan, wang liang, wang yanling
khan sher » han shen, than she
khan syed » ahsan syed, shah syed
chang won » chang soon, chang ann, chang min
yang fan » zhang fan, yang dean, yang yang
won hong » hong hong, kong hong, wang hong
hong yu » wong yue

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

• Performing a fuzzy search may retrieve terms with similar spellings: wang yang fan ((khan sher) or (khan syed)) chang won hong yu ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wang yang fan ((khan sher) OR (khan syed)) chang won hong yu ;*.