Perhaps you should try some spelling variations:
human gene » human genome, human gender, human bone
hua gene » a gene, hua ren, hy5 gene
yang jin » yang jun, ying jin, shang jin
yang jie » yang di, yang jui, yang xi
hong hai » shang hai, zhong tai, dang hai
jing ji » ying jin
yan xi » yang xi, yan zi
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 xi ((hua gene) OR (human gene)) ((((yang jin) OR (yang jie))) OR (jing ji)) hong hai ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang yan xi ((hua gene) or (human gene)) ((((yang jin) OR (yang jie))) or (jing ji)) hong hai ;~".
• Adding a wildcard symbol may retrieve word variants: wang yan xi ((hua gene) or (human gene)) ((((yang jin) OR (yang jie))) or (jing ji)) hong hai ;*.