Perhaps you should try some spelling variations:
yang ying » yang yang, yang jing, huang ying
hua gene » human gene, hua ren, hy5 gene
yang min » yang mind, yang jin, tang min
ying jin » yang jin, jing ji, yang jie
hong shu » tong shui, wong shiu, hong seo
ying ya » ying yang, yang yao, king yax
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: yang ying ya ((hua gene) or (a gene)) ((yang min) or (ying jin)) ((hong shu) OR (cong shu)) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: yang ying ya ((hua gene) OR (a gene)) ((yang min) OR (ying jin)) ((hong shu) OR (cong shu)) ;*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "yang ying ya ((hua gene) or (a gene)) ((yang min) or (ying jin)) ((hong shu) OR (cong shu)) ;*".