OK. I can’t say since I’ve only read articles from CTH posted here.
Don’t know what SQL is but pretty fair results can be had through DuckDuckGo (or others) if you can think of exact phrasing, handles or titles (all prefaced with “freerepublic”) as search words. I’ve pulled up specific posts and threads well over ten years old that way. It is hit or miss.
SQL is the language of databases ... I’ve used it for 30 years ... but most dbs are protected behind firewalls etc so only the application (like this website) has access. You’ll get some, but relatively little, data through a search engine.