Perhaps you should try some spelling variations:
yuan chang » yuan cheng, huang chang, han chang
quang hong » quang cuong, wang hong, zhang hong
minh jeong » min jeong, minh cong
gene sang » lee sang, gene bank
sang minh » kang minah, anh minh, song min
jeong seo » jeong yeon, hong seo, jeong su
hai gene » a gene, a1 gene, hai ren

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

• Performing a fuzzy search may retrieve terms with similar spellings: dong ((yuan chang) or (quang hong)) hai gene sang minh jeong seo ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: dong ((yuan chang) OR (quang hong)) hai gene sang minh jeong seo ;*.