Perhaps you should try some spelling variations:
yang yang » wang yang, wang yan
congo shu » cong shu
yang fan » zhang fan, yang dean, yang jin
hua gene » human gene, a gene, hua ren
ying jin » yang jin, jing ji
yang jie » yang jin, yang di, yang xi
yang jui » yang judy, yang di, yang xi

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 fan) OR (yang yang)) hua gene ((((ying jin) or (yang jie))) or (yang jui)) congo shu ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wang ((yang fan) OR (yang yang)) hua gene ((((ying jin) OR (yang jie))) OR (yang jui)) congo shu ;.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang ((yang fan) OR (yang yang)) hua gene ((((ying jin) or (yang jie))) or (yang jui)) congo shu ;".
• Adding a wildcard symbol may retrieve word variants: wang ((yang fan) OR (yang yang)) hua gene ((((ying jin) or (yang jie))) or (yang jui)) congo shu ;*.