One of the most important parts of starting a search is choosing keywords. Make sure to choose accurate keywords to get the best results.
Example of a keyword: "Jane Austen religion"
And: Use "and" between keywords to get results that contain both keywords. You can use a string of keywords connected by "and" to narrow your search. Ex: Jane Austen AND food AND eighteenth century
Or: Use "or" to find books that use either keyword. Ex: Regency OR Nineteenth Century
Asterisk: Use an astrisk (*) to find alternate suffix for words. Ex: litera* will find "Literature" and "Literary"