10. The system of claim 9 , wherein the instructions cause the one or more data processing apparatus to perform operations further comprising determining that a particular term in the current search query is a potentially inaccurate term.
10. The system of claim 9 , wherein the instructions cause the one or more data processing apparatus to perform operations further comprising determining that a particular term in the current search query is a potentially inaccurate term. 12. The system of claim 10 , wherein: determining that the particular term in the current search query is a potentially inaccurate term comprises determining that the particular term is included in a set of misspelled terms; and generating a modified search query comprises replacing the particular term with the different term.