Perhaps you should try some spelling variations:
wan yanling » wang yanling, wang yangming, wang danning
minh congo » minh cong, bind congo
yang july » yang judy, yang jui, yang jun
kang minh » kang minah, sang minh, anh minh
congo shu » cong shu
yang hua » wang hua, yang hui, ying hua
jin kang » jin chang, jin kyung, jing fang
yang xi » yang di, yang yi, yang jui

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: wan yanling ((yang hua) OR (((yang july) OR (yang xi)))) jin kang minh congo shu ;~.
• Adding a wildcard symbol may retrieve word variants: wan yanling ((yang hua) or (((yang july) or (yang xi)))) jin kang minh congo shu ;*.