Sorry, I didn't get your last reply. You can set up a trend for more BUs. Can't you get all ASC and CRP servers together in the search module? If it's the case then the query is something like this:
vm.name:"ASC*" OR vm.name:CRP*"
and you will get all VMs having ASC or CRP in the beginning of their name.
If I could recommend there are Help pages related to Search (http://www.solarwinds.com/documentation/en/flarehelp/vman/default.htm#svmag_search.htm) and mainly Search Language section (http://www.solarwinds.com/documentation/en/flarehelp/vman/default.htm#svmag_searchlanguage.htm).
Just ping me if you need any help or anything is unclear.
Milan