Perhaps you should try some spelling variations:
yan zhang » yuan chang, bin zhang, han chang
shang hai » shang kai, dang hai, chang ha
yin fang » yin yang, chin fang, jing fang
yin hang » yin yang, ying chang, bin zhang
wei chen » wei shen, frei chen, jui chen
yang jie » yang jin, yang di, yang jui
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 ((yan zhang) OR (((yin fang) OR (yin hang)))) wei chen ((yang jie) OR (yang xi)) shang hai ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wan ((yan zhang) or (((yin fang) OR (yin hang)))) wei chen ((yang jie) or (yang xi)) shang hai ;~".
• Adding a wildcard symbol may retrieve word variants: wan ((yan zhang) or (((yin fang) OR (yin hang)))) wei chen ((yang jie) or (yang xi)) shang hai ;*.