Sometimes you may go to a library to get a document whose title you know. If the books in the library are arranged by title, it will meet your requirement. But the method of arranging documents on the basis of title is also not very helpful. There is always a chance of a title being misquoted. Titles sometimes change from one edition to another. The title of the same document would differ when translated from one language to another. Sometimes the same document is published in different countries under different titles, though the language may remain the same.
Title arrangement, like author arrangement, fails to bring together documents having the same specific subject at one place. Because of these limitations; the arrangement of documents on the basis of title is not very helpful. Here is an example: