Perhaps you should try some spelling variations:
yan yanling » wang yanling, yan jianping
zhong tai » hong tan, zhong zhi
hua gene » human gene, hua ren, hy5 gene
sang min » sang minh, song min, tang min
hong hai » shang hai, dang hai, hong tan
a gene » a genre, a gender, a gentle
wang » wing, wan, lang

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 yan yanling ((hua gene) OR (a gene)) sang min ((hong hai) OR (zhong tai)) ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang yan yanling ((hua gene) OR (a gene)) sang min ((hong hai) or (zhong tai)) ;~".
• Adding a wildcard symbol may retrieve word variants: wang yan yanling ((hua gene) OR (a gene)) sang min ((hong hai) or (zhong tai)) ;*.