What encoding type of these text?

When I search in Goo开发者_如何转开发gle by Thai language. Google will convert like these. %E0%B8%A0%E0%B8%B2%E0%B8%A9%E0%B8%B2%E0%B9%84%E0%B8%97%E0%B8%A2

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URL Encoding: See http://www.w3schools.com/tags/ref_urlencode.asp

It's a URL encoding in which all non-alphanumeric characters except -_. are replaced with a percent (%) sign followed by two hex digits and spaces encoded as plus (+) signs. It is encoded the same way that the posted data from a WWW form is encoded, that is the same way as in application/x-www-form-urlencoded media type.

(Information copied from http://php.net/manual/en/function.urlencode.php)

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UTF-8 + URL Encoding.