The site isn't making any asynchronous requests, so there really is no "real time" aspect to this. If you look at the bottom of the page, it says "Showing the latest hot searches in All Regions".
So, these are just the top X searches from some time period, presumably after some processing and filtering (NSFW results eliminated, capitalization and spelling corrected, maybe some categories omitted, etc).
So, these are just the top X searches from some time period, presumably after some processing and filtering (NSFW results eliminated, capitalization and spelling corrected, maybe some categories omitted, etc).