Perhaps you should try some spelling variations:
yuan human » human human, than human, run human
human gene » human genome, human gender, human bone
gene tang » gene bank
yan yuan » yan guan, fang yuan, nan yan
tang tin » tang min, tang tang, ting ting
wong yue » wang yue
wang » wing, wan, lang

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

• Performing a fuzzy search may retrieve terms with similar spellings: wang yan yuan human gene tang tin ((hong yu) or (wong yue)) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wang yan yuan human gene tang tin ((hong yu) OR (wong yue)) ;*.