Perhaps you should try some spelling variations:
yang human » facing human
human gene » human genome, human gender, human bone
yang ying » yang jing, huang ying, liang ying
yang yang » wang yang, wang yan
yang min » yang mind, yang jin, tang min
yang jie » yang jin, yang di, yang jui
hong shu » cong shu, tong shui, wong shiu

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) OR (yang yang)) yang human gene ((yang min) or (yang jie)) hong shu ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((yang ying) OR (yang yang)) yang human gene ((yang min) OR (yang jie)) hong shu ;*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((yang ying) OR (yang yang)) yang human gene ((yang min) or (yang jie)) hong shu ;*".