Perhaps you should try some spelling variations:
yang yang » wang yan
wang yong » wang hyoung, wang yan, wang shiyong
wang yang » wang yan, wang liang, wang yanling
gene pang » gene bank, gene part
dang hari » dang hai
hua gene » human gene, a gene, hua ren
pang duc » sang duck, pang jun, tung duc
ka hua » ya hua, ka chuan

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((yang yang) or (((wang yong) OR (wang yang)))) ka hua gene pang duc dang hari ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((yang yang) OR (((wang yong) OR (wang yang)))) ka hua gene pang duc dang hari ;.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((yang yang) or (((wang yong) OR (wang yang)))) ka hua gene pang duc dang hari ;".
• Adding a wildcard symbol may retrieve word variants: ((yang yang) or (((wang yong) OR (wang yang)))) ka hua gene pang duc dang hari ;*.