Personally, I’d like BEFORE/AFTER to be two separate options. Actually, a Boolean search would be the best. Find AFTER this and/or BEFORE that.
As to the +/-, I have never liked using those on any site.
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Alter-Drukarsh connections |The Garelicks|Journal 3.3.12 - PHP Version 8.1.17 - mySQL 8.1
The Royals |The Kennedys|The Gerrer Rabbis 3.3.12 - PHP Version 8.1.17 - mySQL 8.1