Perhaps you should try some spelling variations:
tang zheng » wang zheng, fang sheng, fang zhen
wang tang » wang yang, tang tang, wang liang
liu yuan » liu jiyuan, liu yu, chu yuan
liu yan » lili yan
yi gang » ii gang, i gang, li gang
gang xi » yang xi, fang xia
xi tang » xi kang, xi zhang

You may be able to get more results by adjusting your search query.

• The words AND, OR and NOT may confuse the search; try adding quotes: "wang tang ((liu yuan) OR (liu yan)) yi gang xi tang zheng ;~".
• Adding a wildcard symbol may retrieve word variants: wang tang ((liu yuan) OR (liu yan)) yi gang xi tang zheng ;*.