Perhaps you should try some spelling variations:
gene sang » lee sang, gene bank
yang yang » wang yang, wang yan
sang minh » kang minah, anh minh, song min
cong seo » hong seo, cong shu, cong sun
long seo » hong seo, long ago, long des
di hui » yi hui
li hui » li hua, li kui, yi hui

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

• Performing a fuzzy search may retrieve terms with similar spellings: yang yang ((di hui) OR (li hui)) gene sang minh ((cong seo) or (long seo)) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: yang yang ((di hui) OR (li hui)) gene sang minh ((cong seo) OR (long seo)) ;*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "yang yang ((di hui) OR (li hui)) gene sang minh ((cong seo) or (long seo)) ;*".