Perhaps you should try some spelling variations:
yuan cheng » yuan chang, huang cheng, yu cheng
yang liang » wang liang, yan liang, peng liang
yang yang » wang yang, wang yan
hua cheng » hua chen, huang cheng, yu cheng
zhang xin » zhang jian, zhang ming, zhang fan
xin hong » tin hong, min hong, xie hong

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

• Performing a fuzzy search may retrieve terms with similar spellings: yang yang liang ((hua cheng) or (yuan cheng)) zhang xin hong seo ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: yang yang liang ((hua cheng) OR (yuan cheng)) zhang xin hong seo ;*.