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
liang di » liang dan, liang zhi, yang di
liang li » qiang li, liang zhi, tang li
hua gene » human gene, a gene, hua ren
cong hai » hong hai, dang hai, cong van

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 di) OR (((((liang li) OR (liang wei))) OR (ling li)))) hua gene sang minh cong hai ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang ((liang di) or (((((liang li) OR (liang wei))) or (ling li)))) hua gene sang minh cong hai ;~".
• Adding a wildcard symbol may retrieve word variants: wang ((liang di) or (((((liang li) OR (liang wei))) or (ling li)))) hua gene sang minh cong hai ;*.