Keywords may be separated by AND and/or OR statements for greater control of the search results.
For example, Wurlitzer AND banjo would generate a result set that contain both words. However, for Wurlitzer OR banjo, the result set returned would contain both or either words.
Exact matches can be searched for by enclosing keywords in double-quotes.
For example, "Royal Scots Dragoon Guards" would generate a result set which match the exact string.
Brackets can be used for further control on the result set.
For example, Ceilidh and (band or dance or "button box").