Perhaps you should try some spelling variations:
twinn qian » twinn ian
sang minh » kang minah, anh minh, song min
shang hai » shang kai, dang hai, chang ha
qian yan » qian jun, qian yi
yang jun » yang jui, pang jun, yang jin
yan hua » tan hua, ya hua, wang hua
hua ren » hua chen

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

• Performing a fuzzy search may retrieve terms with similar spellings: twinn qian yan hua ren ((sang minh) or (yang jun)) shang hai ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: twinn qian yan hua ren ((sang minh) OR (yang jun)) shang hai ;.
• Adding a wildcard symbol may retrieve word variants: twinn qian yan hua ren ((sang minh) or (yang jun)) shang hai ;*.