1. A method, comprising: matching a first target term, comprised in a target string, to a first known term in an index tree, the first known term associated with a known string identifier (ID); matching a second target term, comprised in the target string, to a second known term in the index tree, the second known term associated with the known string ID; responsive to determining that a threshold number of target terms, comprising the first target term and the second target term, comprised in the target string are respectively matched with a known term associated with the known string ID, matching the target string to a known string associated with the known string ID; and presenting one or more terms associated with the known string on a computing device, at least some of the method implemented at least in part via a processing unit.