Perhaps you should try some spelling variations:
wang ying » wang yong, wang jing, wang ning
ying wang » ping wang, ying yang, ying chang
gene wang » gene bank, wen wang
wang yang » wang yan, wang liang, wang yanling
zhang zhi » zhong zhi, wang zhi, zhang wei
hua gene » human gene, a gene, hua ren
hai » hadi, haji, hari

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

• Performing a fuzzy search may retrieve terms with similar spellings: wang ying wang hua gene wang yang ((zhang zhi) or (dang hai)) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wang ying wang hua gene wang yang ((zhang zhi) OR (dang hai)) ;*.