Perhaps you should try some spelling variations:
yang yang » wang yang, wang yan
khan sher » han shen, khan syed, than she
chang won » chang soon, chang ann, chang min
chang mae » chang ha, changes made
hong shu » cong shu, tong shui, wong shiu
yan yan » yan yuan, nan yan, wang yan
wang » wing, wan, lang

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

• If you are trying to use Boolean operators, they must be ALL CAPS: wang ((yan yan) OR (yang yang)) khan sher ((chang won) OR (chang mae)) hong shu ;~.
• Adding a wildcard symbol may retrieve word variants: wang ((yan yan) or (yang yang)) khan sher ((chang won) or (chang mae)) hong shu ;*.