Perhaps you should try some spelling variations:
cheng than » cheng han, cheng zhang, cheng guan
ong cheng » hong cheng, zong cheng, ong chong
than dong » than done, thang long, than one
wan yan » wang yan, wang yang, qian yan
nan yan » nan ya, wang yan, qian yan
wai yan » wang yan, wei yang
yang xi » yang yi, yang jui
sin » sign, sind, skin

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((((wan yan) OR (nan yan))) or (wai yan)) ((yang xi) or (yang di)) ong cheng than dong sin ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((((wan yan) OR (nan yan))) OR (wai yan)) ((yang xi) OR (yang di)) ong cheng than dong sin ;*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((wan yan) OR (nan yan))) or (wai yan)) ((yang xi) or (yang di)) ong cheng than dong sin ;*".