Perhaps you should try some spelling variations:
fang zheng » fang sheng, tang zheng, wang zheng
wang tang » wang yang, tang tang, wang liang
fang zhen » fang sheng, tang zheng, wang zheng
tang min » chang min, sang minh, yang mind
yuan yi » yuan li, yuan fei, yuan hui
yuan zi » yan zi, yuan li, yuan fei
yang yi » yang di, yang xi, 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: wang tang min ((yuan yi) OR (yuan zi)) yang yi ((fang zheng) OR (fang zhen)) ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang tang min ((yuan yi) or (yuan zi)) yang yi ((fang zheng) OR (fang zhen)) ;~".
• Adding a wildcard symbol may retrieve word variants: wang tang min ((yuan yi) or (yuan zi)) yang yi ((fang zheng) OR (fang zhen)) ;*.