1. A computerized method, implemented at a processing unit, for manipulating a composition of a list of terms associated with a query class; the method comprising: selecting a gallery of entities that are compiled to form the query class, wherein the each entity in the gallery of entities corresponds to a query that shares a common categorization with other queries represented by other entities in the gallery of entities; extracting from at least one data store a list of terms, wherein each term in the list of terms is associated with a search refinement path of the query that includes one or more entities compiled in the selected gallery of entities; scanning a structured searchable database to identify at least one of equivalences between terms within the list of terms or relevant terms that share a common categorization with the query class; condensing or expanding the composition of the list of terms by applying the equivalences or the relevant terms, respectively, to update the list of terms; replacing the list of terms with the updated list of terms; and writing the updated list of terms, in association with the query class, to a storage location on computer-readable media accessible by the processing unit.