Perhaps you should try some spelling variations:
yuan wang » yan wang, yuan kang, yuan chang
pham thai » pham thi
wang tao » wang qiao, huang tao, wang yan
hua gene » human gene, a gene, hua ren
tran thi » trang thu
hong shu » cong shu, tong shui, wong shiu
tao hua » tan hua, tuan hua

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

• Performing a fuzzy search may retrieve terms with similar spellings: yuan wang tao hua gene ((pham thai) or (tran thi)) hong shu ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: yuan wang tao hua gene ((pham thai) OR (tran thi)) hong shu ;*.