Perhaps you should try some spelling variations:
human gene » human genome, human gender, human bone
dong nan » dong yang, dong sin, dong bin
hua gene » a gene, hua ren, hy5 gene
yang jun » pang jun, yang jin, yang judy
yang jie » yang jin, yang di, yang xi
yang jui » yang judy, yang di, yang xi
hong shu » cong shu, tong shui, wong shiu
nan yan » nan ya, wang yan, qian yan

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

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