Perhaps you should try some spelling variations:
gene liang » peng liang, wee liang
yang yang » wang yang, wang yan
liang dan » liang tan, king dan, liang sun
dan zhang » yan zhang, bin zhang, dan phan
zhang zhi » zhong zhi, wang zhi, zhang wei
yan wang » yuan wang, qian wang, yan liang
iii gene » iii rene, iii gender, iii genome

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 wang) OR (yang yang)) iii gene liang dan zhang zhi ;~.
• Adding a wildcard symbol may retrieve word variants: wang ((yan wang) or (yang yang)) iii gene liang dan zhang zhi ;*.