Google Scholar provides a simple way to broadly search for scholarly literature.
Take advantage of the straightforward search interface of Google Scholar to powerfully search across many disciplines and sources. Namely articles, (some) books, conference papers from academic publishers, professional societies, online university institutional repositories, e.g., masters and doctoral theses, plus reputable publications in the web repositories of world-renowned research institutes.
Semantic Scholar covers all STM and SSH disciplines including biology, medicine, computer science, geography, business, history, and economics. Nearly 200 million papers are sourced from 550+ partners such as PubMed, Springer Nature, Taylor & Francis, SAGE, Wiley, ACM, IEEE, arXiv, Microsoft Academic, and Unpaywall.