15. A non-transitory machine-readable storage medium in communication with at least one processor, the machine-readable storage medium storing instructions which, in response to execution by the at least one processor, cause a system to perform operations comprising: receiving an initial query term set; performing phrase recognition on the initial query term set to determine recognized phrases; determining a synonym for at least one of the recognized phrases based on a user selected item category, the synonym comprising a plurality of words merged together as a phrase; and determining, using one or more processors, results within the user selected item category that match the initial query term set and the synonym, the synonym being matched based on selection of a search option from one or more search options selected from a group of search options consisting of: a first search option operable to cause the synonym to be matched whenever the plurality of words of the synonym are matched without regard to order, a second search option operable to cause the synonym to be matched whenever at least one of the plurality of words of the synonym is matched, and a third search option operable to cause the synonym to be matched whenever the plurality of words of the synonym are matched in order.
15. A non-transitory machine-readable storage medium in communication with at least one processor, the machine-readable storage medium storing instructions which, in response to execution by the at least one processor, cause a system to perform operations comprising: receiving an initial query term set; performing phrase recognition on the initial query term set to determine recognized phrases; determining a synonym for at least one of the recognized phrases based on a user selected item category, the synonym comprising a plurality of words merged together as a phrase; and determining, using one or more processors, results within the user selected item category that match the initial query term set and the synonym, the synonym being matched based on selection of a search option from one or more search options selected from a group of search options consisting of: a first search option operable to cause the synonym to be matched whenever the plurality of words of the synonym are matched without regard to order, a second search option operable to cause the synonym to be matched whenever at least one of the plurality of words of the synonym is matched, and a third search option operable to cause the synonym to be matched whenever the plurality of words of the synonym are matched in order. 19. The non-transitory machine-readable storage medium of claim 15 , wherein the operations further comprise: determining a synonym for a second one of the recognized phrases, the synonym comprising a plurality of words; determining additional results that match the synonym for the second one of the recognized phrases, the additional results being matches whenever the plurality of words of the synonym are matched in order; and adding the additional results to the results that match the initial query term set and the synonym.