Exclude word in title in advanced title search

How to exclude a specific word in title in ATS? For instance, I want to exclude the word "Playboy" in title by using the '!' operator but doesn't work: https://www.imdb.com/search/title/?title=!Playboy&keywords=sex%2Cfemale-frontal-nudity&page=1&genres=Documentary&adult=include
Thanks in advance!