The word search for "fart" shows the tool's limits. No entry I saw actually said the word fart, but was listed as doing so -- "fart nawor" (hearts around the world irl), the penny farting (the penny farthing irl), etc.

Under the search button there is a drop down. Enable "exact match" and filter low ocr confidence. Still has many false positives, but you'll also see the "fart king".