Perhaps you should try some spelling variations:
huang yang » huang ying, huang chang, yang yang
wang yang » wang yan, wang liang, wang yanling
gene yang » gene bank
hua gene » human gene, a gene, hua ren
hong hai » shang hai, zhong tai, dang hai
yang xi » yang di, yang yi, yang jui
xi hong » xie hong, kia hong, thi hong

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 yang) or (huang yang)) hua gene yang xi hong hai ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wang ((wang yang) OR (huang yang)) hua gene yang xi hong hai ;*.