Databases conveniently search multiple journals at once, but if you already have a specific focus for your research, it may be helpful to go directly to the journal(s) relevant to your topic.
If you know the name of the journal/magazine/newspaper you are looking for, you can do a Journal Search by title on Omni.
In your search results, click on the title of the journal. From there you can access the full text (if the journal is online) and also search inside for articles within the journal, directly from the record: