Many novels were written in a specific time period and for various reasons, these novels may not be fully published or released. This might result in some novels being available online but not in physical bookstores or libraries. Some novels may be blocked by copyright owners to prevent them from spreading on the Internet. This could result in novels being sold only in certain physical or online bookstores and not online. Some novels may be deleted after a period of time because the editor or the bookstore believes that they are no longer suitable for the market or the needs of readers. This could result in some novels being deleted or made inaccessible online. Some novels may be adapted into different versions or movies, TV series, etc. These versions may be released at different times and places. This might result in some novels being sold in different physical or online bookstores, or being available online but not on other platforms. In short, there were many reasons why some novels could not be found now.