17. A computer-readable storage hardware device comprising instructions executable by a processor to perform operations including: receiving a search query to search a web site from a user interface; performing a keyword search based on the search query to generate keyword search results, wherein performing the keyword search comprises: searching contents of a web site based on the search query; and searching contents of multiple web sites that have been indexed by a search service; performing a natural language search of a frequently-asked question database based on the search query to generate frequently-asked question search results; and sending an output to a device, wherein the output includes a display page that categorizes the keyword search results and the frequently-asked question search results into categories, wherein each category of the display page includes a category title, a first column, and a second column adjacent to the first column, wherein the first column includes a keyword search result associated with the category, and wherein the second column includes a frequently-asked question search result associated with the category, the frequently-asked question search result including a link to a question or an answer accessible from the frequently-asked question database.
17. A computer-readable storage hardware device comprising instructions executable by a processor to perform operations including: receiving a search query to search a web site from a user interface; performing a keyword search based on the search query to generate keyword search results, wherein performing the keyword search comprises: searching contents of a web site based on the search query; and searching contents of multiple web sites that have been indexed by a search service; performing a natural language search of a frequently-asked question database based on the search query to generate frequently-asked question search results; and sending an output to a device, wherein the output includes a display page that categorizes the keyword search results and the frequently-asked question search results into categories, wherein each category of the display page includes a category title, a first column, and a second column adjacent to the first column, wherein the first column includes a keyword search result associated with the category, and wherein the second column includes a frequently-asked question search result associated with the category, the frequently-asked question search result including a link to a question or an answer accessible from the frequently-asked question database. 19. The computer-readable storage device of claim 17 , wherein indicia of the user interface associated with an input field indicates that a keyword, keywords, or a question can be entered in the input field.