Perhaps you should try some spelling variations:
lang yanling » wang yanling, wang yangming, zhang yunling
human gender » bhutan gender, german gender, human genome
human gene » human genome, human bone, human genetic
kang minah » sang minh
duong van » cong van, duong anh
cong sun » cong shu, cong van, wing sun

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

• Performing a fuzzy search may retrieve terms with similar spellings: lang yanling xi ((human gene) OR (human gender)) kang minah ((cong sun) or (duong van)) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: lang yanling xi ((human gene) OR (human gender)) kang minah ((cong sun) OR (duong van)) ;*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "lang yanling xi ((human gene) OR (human gender)) kang minah ((cong sun) or (duong van)) ;*".