Perhaps you should try some spelling variations:
yan jianping » zhao jianping, yu jianxing
yan yanling » wang yanling
gene sang » lee sang, gene bank
hua gene » human gene, a gene, hua ren
sang min » sang minh, song min, tang min
min dang » yimin dang, mein dank, bin dann
hai » hadi, haji, hari

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: lang ((yan yanling) OR (yan jianping)) hua gene sang min dang hai ;~.
• Adding a wildcard symbol may retrieve word variants: lang ((yan yanling) or (yan jianping)) hua gene sang min dang hai ;*.