Perhaps you should try some spelling variations:
yunnan china » urban china, tuan china, wuhan china
yan yunnan » yan yuan
china tan » china top, china two, china taiwan
yong lina » song lina, young linda, yang lin
tan yong » tan hong, tan kong, tan yang
chang ha » chang mae
wan yan » wang yan, nan yan, wai yan

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: wan yan yunnan china tan yong lina ((hong tan) OR (chang ha)) ;~.
• Adding a wildcard symbol may retrieve word variants: wan yan yunnan china tan yong lina ((hong tan) or (chang ha)) ;*.