Perhaps you should try some spelling variations:
yuan ring » yuan ming, yuan ting, yuan kang
ring data » using data, being data, doing data
wong shiu » wong siu, cong shu, song shin
hua gene » human gene, hua ren, hy5 gene
yang tan » yang fan, yang dean, yang yang
long ago » long arm
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: yuan ring data ((hua gene) OR (a gene)) yang tan ((long ago) OR (wong shiu)) ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "yuan ring data ((hua gene) OR (a gene)) yang tan ((long ago) or (wong shiu)) ;~".
• Adding a wildcard symbol may retrieve word variants: yuan ring data ((hua gene) OR (a gene)) yang tan ((long ago) or (wong shiu)) ;*.