We tried to make OpenKM as intuitive as possible, but an advice is always welcome.
Forum rules: Please, before asking something see the documentation wiki or use the search feature of the forum. And remember we don't have a crystal ball or mental readers, so if you post about an issue tell us which OpenKM are you using and also the browser and operating system version. For more info read How to Report Bugs Effectively.
In Chinese you got traditional sort and simple. The problem is on Lucene search engine configuration, here is explained how to solve it http://wiki.openkm.com/index.php/Indexing_configuration ( look at box is talking about Chinese and Japanese )