Databases in the EBSCO "family" can be searched simultaneously by clicking on the "choose databases" link above the search box. Select the additional databases you need and click "ok" to search more than one database at a time. When you do this, leave the search option "Select a field" as it is, rather than trying to identify multiple subjects. In the list below, only Physical Education Index is NOT part of the EBSCO collection.
Some search tips: The "select a field" option looks at the title, abstract, subject headings & full-text if available. It's a broad kind of search.
GALILEO provides lots of full-text articles but three databases in particular are completely full-text and may be of use in your research:
ScienceDirect. Content is provided by the Elsevier Publishing Company and its subsidiaries and provides full-text access to their journals since 1995.
SpringerLink. Provides full-text coverage of journals and books from the Springer Publishing Co. May also include titles from these publishers--Sense and Palgrave-McMillan.
Wiley Online Library. Full-text coverage of journals and books from Wiley Publishing.
For access to thousands of online journals try Browzine. This is not a searchable database, but instead lets you browse thousands of journals.