Perhaps you should try some spelling variations:
yan zhang » yuan chang, bin zhang, han chang
zhang run » zhang jun, zhang rong, zhang fan
john wong » john song, john bonn
jin song » jie song, john song, jin ying
kim song » kim young, kim eung
wong yue » wang yue, hong yu
wan yan » wang yan, nan yan, wai yan

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

• Performing a fuzzy search may retrieve terms with similar spellings: wan yan zhang run ((jin song) or (kim song)) john wong yue ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wan yan zhang run ((jin song) OR (kim song)) john wong yue ;*.