If you only want to find scholarly journal articles only, be sure to check a box titled "refereed" or "scholarly" or "peer reviewed" journals.
This video by Yavapai College Library in Prescott, Arizona demonstrates the different types of information found in Google versus library databases. The video also shows the special features of databases and why you can find better information in library databases.
Press the icon located in the bottom right corner to watch the video in fullscreen mode.
Select the most important 2-3 ideas related to your topic. Put the word AND between each new word or idea; this tells the database to look for resources with ALL your terms.
Hamlet AND Shakespeare AND revenge
Hamlet AND Shakespeare AND moral*
Image copyright of James Yang.
Many scholarly journals use a process called peer review.