Perhaps you should try some spelling variations:
yang guang » yang yang, yan guan
yang liang » wang liang, yan liang, yang yang
real china » rural china, areas china, real thing
real line » real life, real lives, rural line
jie song » jae song, jin song, kim song
song shu » cong shu, song shin, tong shui

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 guang) OR (yang liang)) china ((real line) OR (real china)) jie song shu ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "dong ((yang guang) OR (yang liang)) china ((real line) or (real china)) jie song shu ;~".
• Adding a wildcard symbol may retrieve word variants: dong ((yang guang) OR (yang liang)) china ((real line) or (real china)) jie song shu ;*.