I am looking at computers online. To give an example, I see model numbers such as: "UX303LA-DS52T", "UX303LA-US51T", etc. But when I google "UX303LA-DS52T datasheet" to obtain the official datasheet of the product, all I get is the webpage for "UX303LA" in Asus' website. Now as far as I can tell, both of these models are different from each other, albeit with slight differences. So why can't I reach to specifications of a model such as "UX303LA-US51T" is Asus' website but only reach to specifications of "UX303LA"? How should I interpret the part of the model number that comes after "UX303LA"?
Edit: The reason I am asking this question is, although usually there are specifications for a product in a retailer's website, sometimes they are not complete. And sometimes they don't have specs at all. Furthermore, retailers act in a "no responsibility" manner. They claim that the information there is for the convenience of the customer only and the info there may be outdated/false. Hence, I feel like I should behave like the info on retailers' website is unreliable and hence, I should get the correct information from the manufacturer's website.
Extra: Is a similar concept present in other types of products as well? If so, how should I interpret them?