Perhaps you should try some spelling variations:
cheng zhang » cheng han, zhen zhang, chen zheng
zhang xin » zhang jian, zhang ming, zhang fan
tong shin » song shin, tong shui
wong shiu » wong siu, cong shu, song shin
lang yan » wang yan, wang yang, zhang yan
zi cheng » xi cheng, _ cheng, yi chen
yan yan » yan yuan, nan yan, yang yang
yan zi » yan zhi, yuan zi, ban zi

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 yan zi cheng zhang xin ((tong shin) OR (wong shiu)) ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "lang yan yan zi cheng zhang xin ((tong shin) OR (wong shiu)) ;*".