Perhaps you should try some spelling variations:
wang wing » wang jing, wang ning, wang liang
gene sang » lee sang, gene bank
tan chia » tuan china, than china, can china
sang tin » sang minh, lang tim, sang tae
tin hong » tan hong, kia hong, thi hong
hong hai » shang hai, zhong tai, dang hai
yuan zi » yan zi, yuan li, yuan fei

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

• Performing a fuzzy search may retrieve terms with similar spellings: wang wing ((tan chia) or (yuan zi)) gene sang tin hong hai ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wang wing ((tan chia) OR (yuan zi)) gene sang tin hong hai ;*.