Special characters in CJK languages

To find a sequence of characters that includes special characters in a Chinese, Japanese or Korean (CJK) document, the query expression must include the special characters. This is different to non-CJK languages, where a whitespace can substitute for a special character.

If a document is mixed language, for example, a Chinese language document contains some English terms, a search with whitespace will still substitute for special characters for the non-CJK terms.

For example, if an indexed document contains john_smith, you can search for john_smith or "john smith" (exact match, without the underscore) and both queries return the document that contains john_smith.