Perhaps you should try some spelling variations:
yuan cheng » yuan chang, huang cheng, yu cheng
yang liang » wang liang, peng liang, yang guang
cheng john » chen john, cheng boon
yan liang » wang liang, you liang, yan wang
yang yang » wang yang, wang yan
king cong » king kong, king coal
cong van » congo can, duong van, cong sun

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

• Performing a fuzzy search may retrieve terms with similar spellings: qian ((((yan liang) OR (yang liang))) or (yang yang)) yuan cheng john king cong van ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: qian ((((yan liang) OR (yang liang))) OR (yang yang)) yuan cheng john king cong van ;*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "qian ((((yan liang) OR (yang liang))) or (yang yang)) yuan cheng john king cong van ;*".