Perhaps you should try some spelling variations:
yunnan china » urban china, tuan china, yunnan sheng
wuhan china » tuan china
wang yang » wang yan, wang yanling
dang haji » dang hai, dato haji
dan dang » dan dana, dan yang, dan undang
two big » too big
big dan » big man, big dam, big data

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: ((wang liang) OR (wang yang)) ((wuhan china) OR (yunnan china)) two big dan dang haji ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((wang liang) or (wang yang)) ((wuhan china) OR (yunnan china)) two big dan dang haji ;~".
• Adding a wildcard symbol may retrieve word variants: ((wang liang) or (wang yang)) ((wuhan china) OR (yunnan china)) two big dan dang haji ;*.