Perhaps you should try some spelling variations:
yang guang » yang yang, yan guan, yang liang
yan liang » yang liang, wang liang, you liang
hui ying » huei ying, hoi ying, hui ping
yi yang » yin yang, yi gang, ying yang
yu yang » du yang, yu fang, yu gang
long do » long d, long du, longer do
2 long » a long, 3 long, 3.2 long

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((yan liang) or (yang guang)) can china ((((yi yang) OR (yu yang))) or (hui ying)) 2 long do ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((yan liang) OR (yang guang)) can china ((((yi yang) OR (yu yang))) OR (hui ying)) 2 long do ;*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((yan liang) or (yang guang)) can china ((((yi yang) OR (yu yang))) or (hui ying)) 2 long do ;*".