Perhaps you should try some spelling variations:
zhang boyang » zhang yan, zhang fang, zhang hong
zhang zhang » zhen zhang, cheng zhang, zhang fang
tuan hua » tan hua, tuan vu, yuan hui
rene yan » ren yan, rene ten, see yan
yan hua » tan hua, ya hua, yan guan
won sau » wong sau, wong sam, wong siu
yan ji » yan jiu, ban ji, pan ji

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((zhang zhang) or (zhang boyang)) ((((yan hua) OR (tuan hua))) or (wang hua)) rene yan ji won sau ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((zhang zhang) OR (zhang boyang)) ((((yan hua) OR (tuan hua))) OR (wang hua)) rene yan ji won sau ;.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((zhang zhang) or (zhang boyang)) ((((yan hua) OR (tuan hua))) or (wang hua)) rene yan ji won sau ;".
• Adding a wildcard symbol may retrieve word variants: ((zhang zhang) or (zhang boyang)) ((((yan hua) OR (tuan hua))) or (wang hua)) rene yan ji won sau ;*.