In order to search for journal articles from a specific subject area, framework or perspective, you can search within a specific journal title.
You can search Proquest or EBSCO by specifying the name of the journal title in the field for PUBLICATION TITLE or SOURCE, respectively. (My spot tests indicate the Proquest might be slightly better in some cases).
Significant Journal Titles in the area of Semiotics include:
*Be sure to select the option to limit search to this journal title