Search for exact string

[nightpanda2810]

Is there a way, while using the custom search filter (or another way), to search for an exact string?

For example, I'm looking for anything that has "DC 18" exactly somewhere within the article. By default, it seems to search for any article that contains both "DC" and "18", regardless of placement of the text.

Alternatively, a way to search inside the article suffix would also work for what I'm trying to do.

I'm trying to tag a whole crapton of stuff that I didn't think to tag before, and this search would take a couple days of work down to a few hours.