Perhaps you should try some spelling variations:
dean human » than human, design human, indian human
human gene » human genome, human gender, human bone
dong yang » dong hoang, wang yang, yang yang
yang jie » yang jin, yang di, yang xi
yang jui » yang judy, yang di, yang xi
law main » law pain, law making, new main
wong yue » wang yue, hong yu

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: dong yang dean human gene ((((yang jie) OR (yang jui))) OR (law main)) wong yue ;~.
• Adding a wildcard symbol may retrieve word variants: dong yang dean human gene ((((yang jie) or (yang jui))) or (law main)) wong yue ;*.