If you look at the Forums page here and click on a link to get all threads in that forum, you'll see this url:
Code:
https://vborg.vbsupport.ru/search.php?do=getdaily&forumid=1&childforums=1&saveprefs=false
You can figure out what to use by looking at the code in the search.php page. All the variables you may use are defined in the appropriate section for your search.