Your are right. Thank you very much. Perfect!
In French there is the same distinction of the English "you", that can give "vous" (formal) or "tu" (informal).
Nevertheless, in this language, using informal is really really really not usual in a computer software, where the formal form is nearly always used (e.g. an exception is software for kids).
By the way adding also "Contains word"
would be also userful to search for word "feed" without getting all the unnecessary strings containing feedback.
Customer support service by UserEcho