Perhaps you should try some spelling variations:
yang yang » wang yan
wang yang » wang yan, wang liang, wang yanling
wang yong » wang hyoung, wang yan, wang shiyong
gene yang » gene bank
hua gene » human gene, a gene, hua ren
yang tan » yang fan, yang dean, liang tan
hong ghi » zhong zhi, hong g, hong hai
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 yang))) or (wang yong)) ka hua gene yang tan hong ghi ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((((yang yang) OR (wang yang))) OR (wang yong)) ka hua gene yang tan hong ghi ;.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((yang yang) OR (wang yang))) or (wang yong)) ka hua gene yang tan hong ghi ;".
• Adding a wildcard symbol may retrieve word variants: ((((yang yang) OR (wang yang))) or (wang yong)) ka hua gene yang tan hong ghi ;*.