Perhaps you should try some spelling variations:
zhang ying » zhang ming, zhang jing, zhang ping
zheng qian » zheng quan, zhang qin, zheng xuan
zheng alan » zheng quan, zheng xuan
boon chong » boon siong, joon chang
ying tang » ying yang, ying chang, tang tang
chong ha » chang ha, chong nam, chong wan
a boon » a book

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

• Performing a fuzzy search may retrieve terms with similar spellings: zhang ying tang ((zheng qian) or (zheng alan)) a boon chong ha ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: zhang ying tang ((zheng qian) OR (zheng alan)) a boon chong ha ;*.