Perhaps you should try some spelling variations:
clone than » closer than
gene clone » gene one
chen wang » chen yang, chen rong, chen ping
ming hung » dang hung, fung hung, men hung
than hong » tan hong, thang long, than one
hong sar » kong sar, hong seo, hong tan
yang » lang

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: chen wang ((ming hung) OR (yang di)) gene clone than hong sar ;~.
• Adding a wildcard symbol may retrieve word variants: chen wang ((ming hung) or (yang di)) gene clone than hong sar ;*.