Perhaps you should try some spelling variations:
human gene » human genome, human gender, human bone
wang ying » wang yang, wang yong, wang jing
ying yang » yang yang, yin yang, ying chang
hua gene » a gene, hua ren, hy5 gene
ying tan » wing tan, liang tan, ying bank
tan kong » tan hong
sar » sara, star, saur

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

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