On the /tracks page you can search for tracks sorted by popularity, release date, alphabetically (A-Z or Z-A) and what’s new. These sorting options are found in the drop down on the top right.
There, you can also search for tracks by text, for example a track name, label name or an artist name.
You can search for tracks within certain genres, of certain types (like percussion, vocals etc), for tracks within a specific region or a certain key - all these options are found in the sidebar to the right.
There are also two sliders in the bottom of the search box where you can search for tracks with certain BPM or sort them by release year.
All search criterias above can be combined for more specific searches.