Perhaps you should try some spelling variations:
wang zhang » wang zheng, wang luhang, zhang zhang
hong paul » ron paul
yan wang » yuan wang, yang yang, qian wang
hong thi » hong ghi, phuong thi, zhong tai
wong sau » wong sam, wong siu, wong shiu
i gene » _ gene, a gene, i gede
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: yan wang zhang ((i gene) OR (e gene)) hong thi ((wong sau) or (hong paul)) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: yan wang zhang ((i gene) OR (e gene)) hong thi ((wong sau) OR (hong paul)) ;.
• The words AND, OR and NOT may confuse the search; try adding quotes: "yan wang zhang ((i gene) OR (e gene)) hong thi ((wong sau) or (hong paul)) ;".
• Adding a wildcard symbol may retrieve word variants: yan wang zhang ((i gene) OR (e gene)) hong thi ((wong sau) or (hong paul)) ;*.