The first search is slower; all subsequent searches are faster.
Use the index at left to list all terms starting with the given letter (e.g. 'Index A' lists all terms starting with A).
Use the search box at top right to enter a search term. Try using less specific search phrases if a search term is not found.
If search or typeahead/autocomplete appears to be malfunctioning, please see instructions regarding how to refresh the search data here