Perhaps you should try some spelling variations:
tang tang » taizong tang
tang liu » tang li, dong liu, tang jie
liu yuan » liu yan, liu jiyuan, liu yu
yuan yi » yuan li, yuan zi, yuan fei
yi yang » yin yang, yu yang, ying yang
yu fang » yu gang, yu wang, yu yang
yi gang » ii gang, i gang, li gang

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

• Performing a fuzzy search may retrieve terms with similar spellings: tang tang liu yuan yi yang ((yu fang) or (yi gang)) zheng ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tang tang liu yuan yi yang ((yu fang) OR (yi gang)) zheng ;*.