"and" between words is
assumed; that is, documents will be retrieved that have all
the specified words. If you wish to find all the
documents that have any word, use "or"
between your search words.
To exclude a word, use not. For example, cat
not dog will find all documents that contain cat but
not dog.
To truncate a word, use an asterisk (*) at the end. For
example, the search "comput*" would retrieve
documents that have the words "computer",
"computing", "computation", etc.
You may use parentheses to nest search terms. For
example, (cat or mouse) not dog will find all
documents that contain either cat or mouse, but not dog.