Perhaps you should try some spelling variations:
yang yang » wang yang, wang yan
hua gene » human gene, a gene, hua ren
yang jin » yang jun, ying jin, shang jin
yang jie » yang di, yang jui, yang xi
hong shu » cong shu, tong shui, wong shiu
yang ya » yang yao, yang yi, yang ka
hong ng » hong kong, hong jong, hong 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 ((yang ya) or (yang yang)) hua gene ((yang jin) OR (yang jie)) ((hong shu) or (hong ng)) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wang ((yang ya) OR (yang yang)) hua gene ((yang jin) OR (yang jie)) ((hong shu) OR (hong ng)) ;*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang ((yang ya) or (yang yang)) hua gene ((yang jin) OR (yang jie)) ((hong shu) or (hong ng)) ;*".