Perhaps you should try some spelling variations:
chuan chen » chang chen, hua chen
hai chuan » say chuan, ka chuan, tai chun
chan ming » chan eng, chan fong, chan kang
yan hai » dang hai
han min » han men, kan min, chang min
han en » han men, van en, chan eng
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 hai chuan chen ((((han en) OR (han min))) OR (((chan ming) OR (kian ming)))) cong shu ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang yan hai chuan chen ((((han en) or (han min))) or (((chan ming) OR (kian ming)))) cong shu ;~".
• Adding a wildcard symbol may retrieve word variants: wang yan hai chuan chen ((((han en) or (han min))) or (((chan ming) OR (kian ming)))) cong shu ;*.