You can easily access the material if it belongs to the library collection (printed or electronic). You need your UEF username and password when accessing the electronic material outside of the campus network.
You can always try your luck with Google. Open access publications can be reached smoothly.
Books and articles can be requested from other libraries, if the publication does not belong to your library’s own collection. Read more about interlibrary loans.
If the book you need is rather new and could benefit others too, you can make an acquisition request. The library may then consider purchasing the book for collections.