I am using WordPress search to search a range of custom post types and allow the user to drill-down into each individual post type.
However I'm finding that WordPress is not returning what I'd deem to be the 'best' matches first. For example, if I search for Microsoft, pages that contain the term irregularly are still returned before pages that regularly use the term.
Basically I'm trying to find some information on how WordPress ranks pages and determines relevance and if I can influence this without having to install any plugins.
Any help much appreciated.