To locate a specific file in a folder view, pick Search > Find Filename 
.
Text to find
Enter the text to search for.
Match character case
Match only text with the same uppercase and lowercase characters.
Whole words only
Match on the whole words but not parts of words.
Regular expression
Indicates the search string is a PCRE regular expression. Click on the Insert Regular Expression Element 
button to pick from a list of common regular expression terms. Click the RE Examples button for more info.
Wrap search
When one end of the file is reached, continue searching at the other end.
Search up
Searches backwards, towards the top of the comparison.
Sides
Specify the side(s) of the comparison to search.
Use the Search menu's Find Next Filename 
and Find Previous Filename 
commands for finding additional occurrences of the search string.
