First, please start a new topic rather than trying to take over someone else's topic. Your post relates in no way to the original topic. Being a "newbie" like the OP doesn't mean your question relates.
You can use a website like irc.netsplit.de to try and search for a specific topic, but it won't necessarily make it easy for you to find what you're looking for. You would probably have more luck with Google using a search like "irc business chat" or whatever.
In any case, I really don't see IRC as a good way to meet people for joint ventures. Businesses that use it usually use it either internally or as a help platform, not as a way to get in touch with new people. The majority of IRC is used for support, "general" chat (sometimes it's specific to a topic, but is still just normal chat), or file sharing. Those 3 types likely cover around 99% of IRC. As you can see, what you are looking for isn't in that group and would be part of the very small remaining percentage. You might find what you're looking for, but you'd have more luck in other more appropriate venues.