Perhaps you should try some spelling variations:
yan liang » yang liang, wang liang, you liang
hoang ghi » hong ghi
yan yang » yang yang, yao yang, dan yang
yang hua » wang hua, yang hui, ying hua
hua gene » human gene, a gene, hua ren
gene yan » gene bank, ren yan, see yan
hoang h » hoang _, hoang vu, hoang sy
wang » wing, wan, lang

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

• If you are trying to use Boolean operators, they must be ALL CAPS: wang yan yang hua gene yan liang ((hoang ghi) OR (hoang h)) ;~.
• Adding a wildcard symbol may retrieve word variants: wang yan yang hua gene yan liang ((hoang ghi) or (hoang h)) ;*.