Perhaps you should try some spelling variations:
yang yuhan » wang yuhan, fang yuan, yan yuan
wang yang » wang yan, wang liang, wang yanling
yuhan lin » yuan lin, yushan li
chan alan » chan lau, chan alex, chan jan
tong shui » tong hui, gong hui
lin chan » lin chun, jin chang, lily chan
alan xin » alan n, alan rix, tan xin

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

• Performing a fuzzy search may retrieve terms with similar spellings: wang yang yuhan lin chan alan xin ((cong shu) or (tong shui)) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wang yang yuhan lin chan alan xin ((cong shu) OR (tong shui)) ;*.