Perhaps you should try some spelling variations:
yang yang » wang yang, wang yan
gene sang » lee sang, gene bank
sang minh » kang minah, anh minh, song min
congo can » congo call, cong van, congo a
cong seo » hong seo, cong shu, cong sun
yang ii » yang di, yang xi, yang yi
ai gene » a gene, a1 gene, i gene
ii ai » ii aim, ii air, ai ai

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 ii ai gene sang minh ((cong seo) or (congo can)) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: yang yang ii ai gene sang minh ((cong seo) OR (congo can)) ;.
• Adding a wildcard symbol may retrieve word variants: yang yang ii ai gene sang minh ((cong seo) or (congo can)) ;*.