There are many other research databases that might be useful. Here are just a few.
A multi-disciplinary full-text database that includes scholarly journal articles on all subjects as well as magazines, books and book chapters, reports, conference proceedings, and more.
Power search library resources and more!
This will search several EBSCO Education Databases at once: Academic Search Complete; Education Research Complete; EBSCO ERIC; and Mental Measurements Yearbook with Tests in Print.