Databases are used to locate journal articles, newspapers, and magazines. Most of the articles found in the databases cannot be found if you use Google/Google Scholar.
Use keywords to find articles in the databases.
Some keyword combinations you may want to try are:
Author AND Theme
"Story Title" AND theme
"Story Title" AND criticism
(Author OR Author) AND Theme
("Story Title" OR "Story Title") AND Theme
***Keep in mind, these are only suggestions to help you get started. You are not limited to these combinations.***