Enter a keyword in all lowercase to see every occurance of those letters anywhere in a word. Ie, "hutt" will find "Hutt", "shuttle", "Nal Hutta".
Enter a keyword in ALL UPPERCASE to see only occurances of that exact word no matter what case it is in. Ie, "HUTT" will find "hutt" and "Hutt" but not "Nal Hutta" or "shuttle".
Enter a keyword in mixed case to find that word no matter what case it is in, or how long the word is. Ie, "Hutt" will find "Hutt" and "Nal Hutta" but not "hutts" or "shuttle."