This is when it helps to search for less instead of more. Using the search box for christmas tim* will bring up a fairly long list. Then use [CTRL-F] on your browser and look for comi.
Better than that, use the Filter to search for thread titles - for christmas tim and then [CTRL-F] for comi. [The filter does not need or accept "wild cards" like * and ??] But if you use the Filter to look for a song thread, be sure also to use our Digital Tradition search tools to check there.
Sounds like a hassle, but it gets easy.
Oh, one other thing: on the QuickLinks dropdown menu on almost every Mudcat page, you'll find an entry marked Old advanced Forum Search, which includes almost all of our old and newer search tools on one page. And there are even more search tools in the first message of the FAQ (Frequently Asked Questions).