Perhaps you should try some spelling variations:
wang liang » wang yang
liang wang » liang dan, liang tan, liang ying
gene clone » gene one
gene gene » gene meme, gene one
one gene » one agent, e gene, one get
ein kern » einem kern, im kern, ii kern
ghi » nghi, ghia

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: wang liang wang zhi ((one gene) OR (((gene gene) OR (gene clone)))) ein kern ghi ;~.
• Adding a wildcard symbol may retrieve word variants: wang liang wang zhi ((one gene) or (((gene gene) or (gene clone)))) ein kern ghi ;*.