What is the difference between typing specs into the search bar vs. using the side filters

There is no difference at all between the search strategies

Your results will be the same regardless of how you prefer to search. Once you select a search suggestion based on what you entered in the search bar, you can further refine your search by typing and adding more terms to the search bar, or by using the side filter panel.

For more information on the side filters, check out the links below to see complete lists of the filters and a description of each one.