Perhaps you should try some spelling variations:
wang dong » wang hong, wang jing, wang ning
wang yang » wang yan, wang liang, wang yanling
wang yong » wang hyoung, wang yan, wang shiyong
sang minh » kang minah, anh minh, song min
hua gene » human gene, hua ren, hy5 gene
cong ghi » hong ghi, cong shu
a gene » a genre, a gender, a gentle

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 dong) OR (wang yang))) OR (wang yong)) yang ((hua gene) OR (a gene)) sang minh cong ghi ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((wang dong) or (wang yang))) or (wang yong)) yang ((hua gene) OR (a gene)) sang minh cong ghi ;~".
• Adding a wildcard symbol may retrieve word variants: ((((wang dong) or (wang yang))) or (wang yong)) yang ((hua gene) OR (a gene)) sang minh cong ghi ;*.