1. A method for performing voice recognition in a display apparatus, comprising: receiving an uttered voice of a user; extracting a plurality of similar words which are similar to the uttered voice by extracting voice information from the uttered voice and determining reliability of a plurality of words based on the extracted voice information; setting a word satisfying a predetermined condition from among the plurality of extracted similar words as a target word with respect to the uttered voice; and displaying at least one of the target word and a similar word list including similar words other than the target word.