Perhaps you should try some spelling variations:
yunnan china » urban china, tuan china, wuhan china
china chang » china zhang, china changqi, china china
chin chang » chain change, china zhang, colin chang
yang xing » yang jing, yang liang, yang using
qian yan » qian jun
xing hui » wang hui, tong hui, feng hui

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

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