Perhaps you should try some spelling variations:
qian sang » qian wang, qian sheng, qian rong
sang minh » kang minah, anh minh, song min
cheng han » chen hao
chen zhen » chen zhe
ming kong » king kong, sing kong, hong kong
minh hoa » mind how
kong seo » hong seo, kong sek, kong sar

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

• Performing a fuzzy search may retrieve terms with similar spellings: qian sang minh hoa ((cheng han) or (chen zhen)) ming kong seo ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: qian sang minh hoa ((cheng han) OR (chen zhen)) ming kong seo ;*.