Years ago, I went searching for a plugin that would help me return better search results through WordPress; especially on client's sites and I'm so glad I found Mikko's Relevannsi.
Relevannsi is a staple in our plugin arsenal and I just can't recommend it highly enough. It takes the internal blog-biased search and turns it into a super-powerful tool that gets your users where they want to go, quickly.
Thanks Mikko! Keep up the great work. :)
P.S. We love it so much that we purchased and maintain a dev license for Relevanssi Premium