When you're searching for something in the library's collection, as opposed to something in a journal or database, the TCU Library catalog is often a better choice than FrogScholar for searching. However, the catalog will not find journal articles or videos in online databases.
The catalog has two modes that are particularly useful for searching: Basic Search and Advanced Search. Each presents some unique search options. "Format" selections are the same in each. Basic Search is shown below, followed by Advanced Search.
Scroll down to see Advanced Search. You don't have to be an experienced or skilled searcher, by the way, to use Advanced Search - it's just a different set of options. Besides the different options, in Basic Search you search for a title, author, subject heading, etc. one at a time. In Advanced Search you can search for a title, author and other details in one search. For more how-tos on searching try one of the library's online tutorials via How do I begin my research?, particularly the one entitled Library Catalog.