Perhaps you should try some spelling variations:
lang yuan » fang yuan, wang yuhan, meng yuan
yuan wang » yan wang, yuan kang, yuan chang
wang yang » wang yan, wang liang, wang yanling
wang jun » pang jun, yang jun, wang jing
yao yang » yang yang
yi chang » ying chang, jin chang, vii chang
ii chang » vii chang, ii changes, iii change

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

• Performing a fuzzy search may retrieve terms with similar spellings: lang yuan wang jun ((wang yang) or (yao yang)) ((yi chang) or (ii chang)) (hai or haji) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: lang yuan wang jun ((wang yang) OR (yao yang)) ((yi chang) OR (ii chang)) (hai OR haji) ;.
• Adding a wildcard symbol may retrieve word variants: lang yuan wang jun ((wang yang) or (yao yang)) ((yi chang) or (ii chang)) (hai or haji) ;*.