Don't forget that the there can be more than one page of tables...and you may not be looking at ALL of the tables in your database.
WM
In phpMyAdmin, it only goes to the r in the right hand column do a select * from mdl_user and you should get what you want.
You can also find it by clicking on the "filter items by name" input and then type "mdl_user". Press Enter and it will show the tables in that database with has mdl_user