Currently the number of items that are displayed on the search result screen (example link) is twelve. There is not way to change that number, but it seems the software is able to display more just by changing the page_size parameter to something else, (example).
Twelve seems like a small number as a default, and there's no reason to not increase this to something larger without hampering performance, e.g. 36.
Also it seems not that much work to add a way to change the number of items displayed on this page to a couple of custom values, e.g. 12, 24, 36 and 48.
Would be nice if this setting is also saved for logged in users.