Perhaps you should try some spelling variations:
human gene » human genome, human gender, human bone
yang yan » yang yang, wang yan, yang yao
yang fan » zhang fan, yang dean, yang yang
yang jin » yang jie, yang jun, ying jin
yang jui » yang judy, yang di, yang xi
wong sau » wong sam, wong siu, wong shiu
yang yi » yang di, yang xi

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

• Performing a fuzzy search may retrieve terms with similar spellings: wang ((yang yan) or (yang fan)) human gene ((((yang jin) or (yang jui))) or (yang yi)) wong sau ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wang ((yang yan) OR (yang fan)) human gene ((((yang jin) OR (yang jui))) OR (yang yi)) wong sau ;.
• Adding a wildcard symbol may retrieve word variants: wang ((yang yan) or (yang fan)) human gene ((((yang jin) or (yang jui))) or (yang yi)) wong sau ;*.