Perhaps you should try some spelling variations:
yuhan wang » yan wang, yuhuan huang
yuan wang » yan wang, yuan kang, yuan chang
chan ming » kian ming, chan eng, chan fong
ming cong » minh cong, ming kong, ming code
hua chen » jui chen, yu chen, a chen
han shen » khan sher, can she, han en
cong tai » long tail, zhong tai, cong van

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

• Performing a fuzzy search may retrieve terms with similar spellings: wang ((yuhan wang) or (yuan wang)) ((hua chen) or (han shen)) chan ming cong tai ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wang ((yuhan wang) OR (yuan wang)) ((hua chen) OR (han shen)) chan ming cong tai ;.
• Adding a wildcard symbol may retrieve word variants: wang ((yuhan wang) or (yuan wang)) ((hua chen) or (han shen)) chan ming cong tai ;*.