Perhaps you should try some spelling variations:
duncan china » yunnan china, duncan kalina, urban china
china chang » chin chang, china zhang, china changqi
yang july » yang judy, yang jun
dang hadi » dang hai
chang su » chang hsun, chang fwu, chang gui
yang jui » yang judy, yang xi, yang yi
su chen » su cheng, yu chen, jui chen

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: duncan china chang su chen ((yang jui) OR (((yang di) OR (yang july)))) dang hadi ;~.
• Adding a wildcard symbol may retrieve word variants: duncan china chang su chen ((yang jui) or (((yang di) or (yang july)))) dang hadi ;*.