Keywords may be separated by AND and/or OR statements for greater control of the search results.
For example, Space AND Marines would generate a result set that contain both words. However, for Space OR Marines, the result set returned would contain both or either words.
Exact matches can be searched for by enclosing keywords in double-quotes.
For example, "Space Marine Head" would generate a result set which match the exact string.
Brackets can be used for further control on the result set.
For example, Orks and (head or legs or "big shoota").
