Some databases will include the full-text of articles, but others will include thebutton which links to full-text when available and if not available, gives you the option to request articles for free through Interlibrary Loan's Illiad service.
Have you already spent 20 minutes search and you feel like you're hitting a wall? Stop what you're doing and contact your librarian!
Research takes time, and when you're working on research for a paper you might spend hours researching and try many, many searches before you're done. But you shouldn't spend hours searching and finding nothing. If you spend 20-30 minutes on your research and you're not finding anything remotely relevant, please stop what you're doing and contact your librarian! I can help you develop search search strategy, and maybe choose another database more suited for your topic.