Perhaps you should try some spelling variations:
liang wei » xiang wei, zhang wei, wang wei
gene sang » lee sang, gene bank
sang minh » kang minah, anh minh, song min
tong shui » tong hui, cong shu, gong hui
liang li » ling li, qiang li, liang zhi
hua gene » human gene, a gene, hua ren
hong shu » cong shu, wong shiu, hong seo

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

• If you are trying to use Boolean operators, they must be ALL CAPS: wang ((liang wei) OR (liang li)) hua gene sang minh ((hong shu) OR (tong shui)) ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang ((liang wei) or (liang li)) hua gene sang minh ((hong shu) OR (tong shui)) ;~".
• Adding a wildcard symbol may retrieve word variants: wang ((liang wei) or (liang li)) hua gene sang minh ((hong shu) OR (tong shui)) ;*.