Perhaps you should try some spelling variations:
fang zheng » fang sheng, fang zhen, tang zheng
wang tang » wang yang, wang liang, wang yan
tang tang » taizong tang
liu yuan » liu jiyuan, liu yu, chu yuan
liu yan » lili yan
yi yang » yin yang, yi gang, yu yang
di fang » xia fang, cai fang, jia fang

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