So, I know that Redump's URL can be modified to filter discs based on certain criteria.

For example:

http://redump.org/discs/system/pc/ only displays PC dumps

http://redump.org/discs/dumper/ajshell1/ only displays my dumps

But some are a bit more hidden.

http://redump.org/discs/errors/null/ only shows discs without an error count

http://redump.org/discs/media/cd only displays discs on CDs.

http://redump.org/discs/region/U/ only shows US region discs.

http://redump.org/discs/language/ seems as though it can be used to filter languages, but I can't get it to work.

But there are a bunch of other search terms that don't seem to be documented anywhere.

For this reason, I think all sorting and filtering terms should be made publicly available somewhere.

http://forum.redump.org/post/56061/#p56061

PX-760A (+30), PX-W4824TA (+98), GSA-H42L (+667), GDR-8164B (+102), SH-D162D (+6), SOHD-167T (+12)