Perhaps you should try some spelling variations:
human gender » bhutan gender, german gender, human genome
human gene » human genome, human bone, human genetic
yuan wang » yan wang, yuan kang, yuan chang
wang tan » wang yan, wang ban, wang dan
yang lin » yang jin, wang lin, yang liang
yang li » yang di, yang xi, yang yi

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

• Performing a fuzzy search may retrieve terms with similar spellings: yuan wang tan ((human gene) or (human gender)) ((yang lin) or (yang li)) hong seo ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: yuan wang tan ((human gene) OR (human gender)) ((yang lin) OR (yang li)) hong seo ;.
• Adding a wildcard symbol may retrieve word variants: yuan wang tan ((human gene) or (human gender)) ((yang lin) or (yang li)) hong seo ;*.