Perhaps you should try some spelling variations:
zhang yuqing » zhang yuqin, zhang yunling, zhang ying
boon chong » boon siong, joon chang
jian yang » qian yan, dan yang, jia fang
jing fang » jia fang, jin kang, weng fang
chong nam » phuong nam, chong wan, chong yah
tan chen » tan cheng, ta chen, jane chen

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

• Performing a fuzzy search may retrieve terms with similar spellings: zhang yuqing tan chen ((jian yang) or (jing fang)) boon chong nam ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: zhang yuqing tan chen ((jian yang) OR (jing fang)) boon chong nam ;*.