To avoid quotes, you can search for the Activity or Merit count. In your case, I'd search for "Merit: 4069".
Nice tip. I have never tried that personally, but I will remember it for the future. I sometimes search for "merited" when I open a thread that spans across multiple pages. Especially in boards such as Bitcoin Discussion. Not all good posts are merited and not all merited posts are necessarily good, but it often shows if the OP got the help they needed.