Perhaps you should try some spelling variations:
tang tang » taizong tang
tang fang » zhang fang, yang fan, jing fang
fang yuan » wang yuhan, wang yan, meng yuan
yang yang » wang yang, wang yan
tan yang » tan ying, tan yong, tao yang
dan yang » daun yang, wang yang, adam yang
yi kang » xi kang, yi gang, yi yang

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: tang tang fang yuan ((tan yang) OR (((dan yang) OR (yang yang)))) ((yi kang) OR (ii gang)) han ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tang tang fang yuan ((tan yang) or (((dan yang) OR (yang yang)))) ((yi kang) or (ii gang)) han ;~".
• Adding a wildcard symbol may retrieve word variants: tang tang fang yuan ((tan yang) or (((dan yang) OR (yang yang)))) ((yi kang) or (ii gang)) han ;*.