Why Not Just Use Google Scholar?
You might be thinking, "Well, why not just use Google Scholar?"
The answer to this often-asked question is that Google does not disclose what journals and online publishers it searches. This means that you as the researcher would not be able to see where Google Scholar is pulling its search results from when you conduct searches in it. Consequently, there is no way of knowing what sources Google is excluding from its search or even how Google selects what sources to search or not search. The issue with this is the bias that occurs with including or excluding certain sources. The search results that you receive are not truly comprehensive or reflective of the subject you are researching.
Note: This is not to discourage you from using Google Scholar altogether! Rather, it is to encourage you to focus on using Waters Library's databases or OneSearch to conduct your research, with Google Scholar acting as a supplement to your main search strategies.