Rather that typing a long sentence, enter something like 'document separator'. This will return all the articles with the words 'document' or the word 'separator' in the title or keyword list.
When performing regular expressions that need to capture special characters (eg. Chinese or Arabic character sets), you have options on how you go about this.Option 1 - Refence the character groupAll CJK characters - REGEX([\p{IsCJKUnifiedIdeographs}]{1,}) All Arabic cha
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