Once you have clicked on the 'Start Search' button on the text search form, you will access a list of query results that is similar to the virtual showroom produced by your image searches. Each query result lists the author and title of a document, the genre of text to which it belongs (e.g. 'article', 'historical piece', etc.), and one or several red diamonds indicating the passage in the document to which your selection of categories applies.
If you want to read the entire document, click on the author or title; if you want to be directed to the relevant passage immediately, click on one of the diamonds.