After performing a search in GALILEO, make sure that you click on the checkbox to the left of the Full Text option underneath Limit To on the left-hand side of the screen in order to display only those resources that the TU Library currently has full text access to.
And don't forget to click on the checkbox to the left of the Scholarly (Peer Reviewed) Journals option in order to filter out resources that haven't been peer-reviewed!
If you start feeling overwhelmed by the number of search results in GALILEO (or you're coming across too many irrelevant search results), then consider searching one of the databases listed on this page. They provide more subject-specific articles covering the topics of rehabilitation, counseling, psychology, and disability (and don't forget to look for their "Full text" and "Peer reviewed" options).