Perhaps you should try some spelling variations:
wang liang » wang yang
human gene » human genome, human gender, human bone
wang wang » wang yang, wang yan, wang yong
wong siu » wong shiu, kong siu, wong sau
yang xi » yang di, yang yi, yang jui
xi wong » kie wong
a gene » a genre, a gender, a gentle

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((wang wang) or (wang liang)) tao ((human gene) or (a gene)) yang xi wong siu ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((wang wang) OR (wang liang)) tao ((human gene) OR (a gene)) yang xi wong siu ;.
• Adding a wildcard symbol may retrieve word variants: ((wang wang) or (wang liang)) tao ((human gene) or (a gene)) yang xi wong siu ;*.