Perhaps you should try some spelling variations:
yang yang » wang yang, wang yan
gene yang » gene bank
hua gene » human gene, a gene, hua ren
yang jin » yang jie, yang jun, ying jin
hong 7hi » hong ghi, zhong zhi, hong hai
ka hua » ya hua, ka chuan
hong 7 » hong w, hong a, hong g
wang » wing, lang

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

• Performing a fuzzy search may retrieve terms with similar spellings: (((wang OR wan) yanling) or (yang yang)) ka hua gene yang jin ((hong 7hi) or (hong 7)) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((wang OR wan) yanling) OR (yang yang)) ka hua gene yang jin ((hong 7hi) OR (hong 7)) ;*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(((wang OR wan) yanling) or (yang yang)) ka hua gene yang jin ((hong 7hi) or (hong 7)) ;*".