I would recommend searching for your topic in Google Scholar before starting a general Google search. Google Scholar only returns items from academic sources, increasing your chances of finding articles that you can cite.
Add phrasing or subjects to help narrow your search results. Some examples:
gender in hamilton lin manuel miranda
historical analysis of hamilton musical
criticism hamilton miranda
In a general Google search, you can add a site limiter to only pull page results from educational institutions (site:.edu):
hamilton play analysis site:.edu