Perhaps you should try some spelling variations:
clone than » closer than
gene clone » gene one
weng fang » jing fang, wen wang
than hong » tan hong, thang long, than one
hong than » hong tan, long thanh, hong hai
ming hua » ying hua, ming hung, wang hua
yang » lang, wang

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

• Performing a fuzzy search may retrieve terms with similar spellings: weng fang ((ming hua) or (yang di)) gene clone than hong than ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: weng fang ((ming hua) OR (yang di)) gene clone than hong than ;*.