To find articles within a specific journal in one of the lists on this guide, you can use the advanced search function of Esearch. There are lists of journals related to Composition and Rhetoric, Technical Writing, and Writing Pedagogy located in this guide.
The search screen will look like the screenshot below. Change the first search category from "All Fields" to "Publication Title" and type in the journal you'd like to search. Below that, you can type in search terms.
Searching in this way will only display articles that were published in that specific journal: