Perhaps you should try some spelling variations:
zhang ying » zhang ming, zhang jing, zhang ting
zhang ping » zhang ming, zhang jing, zhang ting
boon chong » boon siong, joon chang
jane chen » jean chen, jie chen, kang chen
chen qian » chen jian, chen siyan, chen jean
qian yan » qian jun, qian yi
yan boon » a boon, ar boon
chong ha » chang ha, chong nam, chong wan

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) or (zhang ping)) jane chen qian yan boon chong ha ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((zhang ying) OR (zhang ping)) jane chen qian yan boon chong ha ;*.