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
gain yang » dan yang, daun yang, yin yang
tan yang » dan yang, tan ying, tan yong
kang han » kang chen, kong hang, zhang han
xi kang » jin kang, xi zhang

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 ((gain yang) OR (tan yang)) xi kang han ;~.
• Adding a wildcard symbol may retrieve word variants: tang tang fang yuan ((gain yang) or (tan yang)) xi kang han ;*.