Filtering of that nature doesn't exist on the guild as far as I know.

Closest filtering ability would be using [url=https://www.roleplayerguild.com/roleplays]this link[/url] to specifically search for RPs by the tags you want, but if the RP is tagged with, say, military on top of the tags you're looking for, it'll still show up.

It'd probably be a feature that you'd need to request.