Perhaps you should try some spelling variations:
wing yan » wang yan, wing ian, wing tan
yan tuan » yan guan, yan yuan, anh tuan
hy5 gene » 8.5 gene
yang jie » yang jin, yang di, yang xi
yang jui » yang judy, yang di, yang xi
wong siu » wong shiu, kong siu, wong sau
yan jiu » yang jin, pang jiu
a gene » a genre, a gender, a gentle

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: wing yan tuan ((hy5 gene) OR (a gene)) ((yan jiu) OR (((yang jie) OR (yang jui)))) wong siu ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wing yan tuan ((hy5 gene) or (a gene)) ((yan jiu) or (((yang jie) OR (yang jui)))) wong siu ;~".
• Adding a wildcard symbol may retrieve word variants: wing yan tuan ((hy5 gene) or (a gene)) ((yan jiu) or (((yang jie) OR (yang jui)))) wong siu ;*.