Perhaps you should try some spelling variations:
huang yongfu » huang yang, huang ying
guifang yang » cuifen yang, huang yang
gene wang » gene bank, wen wang
wang wang » wang yang, wang liang, wang yan
wang yong » wang yang, wang hyoung, wang yan
hua gene » human gene, a gene, hua ren
yong shu » cong shu, tong shui, wong shiu

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

• Performing a fuzzy search may retrieve terms with similar spellings: dong ((huang yongfu) or (guifang yang)) hua gene wang wang yong shu ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: dong ((huang yongfu) OR (guifang yang)) hua gene wang wang yong shu ;*.