You are mixing two different geocoding requests in one. structured and unstructured. query
should only be used on it's own, when you add CountryRegion
to the request, it might be interpreted as a structured request and the query parameter ignored.
Also try setting the culture
parameter of the URL to zh-Hans
or zh-Hant
so that the geocoder knows your request is in Chinese and to call into the Chinese data provider for detailed Chinese map data.
Also, be sure to encode your query so that special characters don't cause issues in the request. This is a best practice.
Here is a modified version of your request.
http://dev.virtualearth.net/REST/v1/Locations?query=%E8%97%95%E8%88%AB%E8%B7%AF276%E5%8F%B7&incl=queryParse&culture=zh-Hans&key=