Perhaps you should try some spelling variations:
human gene » human genome, human gender, human bone
yao yang » yang yang
hua gene » a gene, hua ren, hy5 gene
yang jie » yang jin, yang di, yang jui
jie ying » jin ying, li ying, jie song
ying sar » using sar, kong sar
wang » wing, wan

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

• Performing a fuzzy search may retrieve terms with similar spellings: (wang or lang) yao yang ((hua gene) or (human gene)) yang jie ying sar ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (wang OR lang) yao yang ((hua gene) OR (human gene)) yang jie ying sar ;.
• Adding a wildcard symbol may retrieve word variants: (wang or lang) yao yang ((hua gene) or (human gene)) yang jie ying sar ;*.