Perhaps you should try some spelling variations:
yuan chang » yuan cheng, huang chang, han chang
yuan wang » yan wang, yuan kang, qian wang
zhong thi » zhong tai, zhong zhi, phuong thi
hong paul » ron paul
one gene » gene gene, one agent, one get
thi hong » tan hong
e gene » _ gene, a gene

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 (yuan chang)) yan ((one gene) or (e gene)) zhong thi hong paul ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((yuan wang) OR (yuan chang)) yan ((one gene) OR (e gene)) zhong thi hong paul ;*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((yuan wang) OR (yuan chang)) yan ((one gene) or (e gene)) zhong thi hong paul ;*".