Now it provides four thesaurus: English, Russian, Portuguese and Spanish.
Note: Before you install it and want to have a try, please install WPS Office first ( Download link: http://play.google.com/store/apps/details?id=cn.wps.moffice_eng ). It needs to provide service with WPS Office installed in your devices.
How to Use: After you install this plugin, there will not be an icon added to your devices desk, meaning it has no "face". Just when you use the Spell Checker feature in WPS Office, this thesaurus service will be called according your languages.