Perhaps you should try some spelling variations:
human gender » bhutan gender, german gender, human genome
human gene » human genome, human bone, human genetic
wang wang » wang yang, wang liang, wang yan
wang yong » wang yang, wang hyoung, wang yan
yang amin » yang jin, yang lin, yang mind
amin hong » min hong, among hong, tin hong

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((wang wang) or (wang yong)) yang ((human gene) OR (human gender)) yang amin hong seo ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((wang wang) OR (wang yong)) yang ((human gene) OR (human gender)) yang amin hong seo ;*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((wang wang) or (wang yong)) yang ((human gene) OR (human gender)) yang amin hong seo ;*".