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
fang yuan » wang yuhan, wang yan, meng yuan
yin yang » ying yang, yin fang, yin hang
yi yang » yi gang, yu yang, ying yang
xi fang » xia fang, xi kang, cai 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)) fang yuan ((yi yang) OR (yin yang)) xi fang zheng ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((wang tang) OR (tang tang)) fang yuan ((yi yang) or (yin yang)) xi fang zheng ;~".
• Adding a wildcard symbol may retrieve word variants: ((wang tang) OR (tang tang)) fang yuan ((yi yang) or (yin yang)) xi fang zheng ;*.