Perhaps you should try some spelling variations:
huang ying » huang jing, huang ting, huang yang
human gene » human genome, human gender, human bone
tan huang » tan hong, tan hua, tan yang
ying tan » liang tan, ying bank, ying yang
wing tan » wing ian, liang tan, hong tan
yang jie » yang jin, yang di, yang jui
a gene » a genre, a gender, a gentle
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: tan huang ying ((human gene) or (a gene)) ((((ying tan) or (wing tan))) or (yang jie)) kong sar ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tan huang ying ((human gene) OR (a gene)) ((((ying tan) OR (wing tan))) OR (yang jie)) kong sar ;.
• Adding a wildcard symbol may retrieve word variants: tan huang ying ((human gene) or (a gene)) ((((ying tan) or (wing tan))) or (yang jie)) kong sar ;*.