Perhaps you should try some spelling variations:
cheng thang » cheng zhang, cheng han
thang pham » dang pham
lang yan » wang yan, wang yang, zhang yan
yang yun » yang jun, tang yun, yang yue
yang jui » yang judy, yang di, yang xi
yang yi » yang di, yang xi
cong » congo, long, hong

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

• Performing a fuzzy search may retrieve terms with similar spellings: lang yan ((yang yun) or (((yang yi) OR (yang jui)))) cheng thang pham cong shu ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: lang yan ((yang yun) OR (((yang yi) OR (yang jui)))) cheng thang pham cong shu ;*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "lang yan ((yang yun) or (((yang yi) OR (yang jui)))) cheng thang pham cong shu ;*".