Perhaps you should try some spelling variations:
yunnan china » urban china, tuan china, wuhan china
yang liang » wang liang, yan liang, peng liang
yang yang » wang yang, wang yan
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 d » long do, long du, long _

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

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