Perhaps you should try some spelling variations:
quang duong » quang cuong, quang hong
duong san » duong van, aung san, huong lan
juan rene » juan meng, juan rana
yang jin » yang jie, yang jun, ying jin
yang lin » wang lin, yang liang, huang lin
wong yue » wang yue, hong yu
yang li » yang xi, yang yi, tang li

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: quang duong san juan rene ((((yang jin) OR (((yang lin) OR (yang li))))) OR (yang di)) wong yue ;~.
• Adding a wildcard symbol may retrieve word variants: quang duong san juan rene ((((yang jin) or (((yang lin) or (yang li))))) or (yang di)) wong yue ;*.