The problem is that this setting is looking for entire words. Because periods are not interpreted as a word delimiter by XYplorer, when you have a title such as "The.Movie.Video.avi", it sees that entire filename as a single word rather than seeing any single word "The." (if periods were interpreted as delimiters, it would see the first word as "The" and we wouldn't have this problem in the first place). Unfortunately, the problem you're trying to resolve is also preventing your solution from working. In order for your setting to work you would need to have a filename such as "The. Movie.Video.avi". Also I'm not sure what kind of wildcard support XYplorer has, but even using a wildcard wouldn't circumvent the problem when the entire filename is one word.
My suggestion to you would be to change the filenames. I understand you don't want to go to each file individually and change the names manually, but XYplorer makes automatic name changes very easy. Select all of the files you wish to change and right click, then go to "Rename Special". Here you can do all sorts of changes; I frequently use "space to _" and vice versa. Now when it comes to something unconventional like periods, you need to use "Search and Replace". Simply type the string you would like to replace, then a slash, then the string you want to replace it with. The issue with periods is that your file extension uses a period and you probably don't want to get rid of that, so you can just replace every period with space+period which would change the filename to something like "The .Movie .Video .avi".