Perhaps you should try some spelling variations:
yuan wang » yuan kang, yuan chang, qian wang
yan human » than human, von human, run human
gene yang » gene bank
yan wang » yang yang, qian wang, yan liang
yang thi » dang thi, yang chik, yang di
thi hong » tan hong
hong yu » wong yue

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((yuan wang) OR (yan wang)) ((yan human) or (non human)) gene yang thi hong yu ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((yuan wang) OR (yan wang)) ((yan human) OR (non human)) gene yang thi hong yu ;*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((yuan wang) OR (yan wang)) ((yan human) or (non human)) gene yang thi hong yu ;*".