To subscribe to the newsletter, fill out the survey and check the appropriate box. The CPU intensive regular expression search is an additional option. Also, spelling errors will invariably lead to results that do not contain what you are actually looking for. Substring search is the default search type and very useful if you pay attention to picking suitable substrings. In all other cases you will get a failure message or a result you likely didn't intend to get.
Fuzzy search is a very useful search method if the above cases apply.
Since it needs more computing time than the other options on average and features a more complex syntax it's to be used with moderation. Don't use it if one of the other three options is equally suited to solve your search problem. If you encounter unexpected or incorrect behaviour of fuzzy search, you can drop me a line and report the problem. See the extended search form for a good starting place to search or browse this new section. The database continues to grow at an amazing rate despite the fact that we now have complete information for thousands of movies and people.