Perhaps you should try some spelling variations:
gene clone » gene one
clone than » closer than
yang yang » wang yang, wang yan
than wong » thang long, than one, than done
yan wang » yuan wang, qian wang, yan liang
yang all » wang all, yang dali, yang li
all gene » all gender

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((yan wang) or (yang yang)) yang all gene clone than wong (lai or laid) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((yan wang) OR (yang yang)) yang all gene clone than wong (lai OR laid) ;*.