Perhaps you should try some spelling variations:
human gene » human genome, human gender, human bone
wang yong » wang yang, wang hyoung, wang yan
yong yan » yang yang, dong yang, ying yang
hua gene » hua ren, hy5 gene
ying tan » wing tan, liang tan, ying bank
tan kong » tan hong
a gene » a genre, a gender, a gentle
sar » sara, star, saur

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

• Performing a fuzzy search may retrieve terms with similar spellings: wang yong yan ((((hua gene) OR (a gene))) or (human gene)) ying tan kong sar ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wang yong yan ((((hua gene) OR (a gene))) OR (human gene)) ying tan kong sar ;.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang yong yan ((((hua gene) OR (a gene))) or (human gene)) ying tan kong sar ;".
• Adding a wildcard symbol may retrieve word variants: wang yong yan ((((hua gene) OR (a gene))) or (human gene)) ying tan kong sar ;*.