ex: Harry +Potter will return results with the word 'Potter'.
ex: Harry -Potter will return results without the word 'Potter'.
ex: Harry AND Potter will return results with both 'Harry' and 'Potter'.
ex: Harry OR Potter will return results with just 'Harry', results with just 'Potter' and results with both 'Harry' and 'Potter'.
ex: Harry NOT Potter will return results without the word 'Potter'.
ex: "Harry Potter" will return any results with 'Harry Potter' in them, but not 'Potter Harry'.
ex: Pot*er will return results with words starting with 'Pot' and ending in 'er'. In this case, 'Potter' will be a match.
This design comes from an 1893 binding housing Voltaire’s Zadig, or The Book of Fate. First published in 1747, it tells the story of Zadig, an ancient Babylonian philosopher. The book is a philosophical treatise that provides thematic inspiration for the modern detective story, including for Edgar Allen Poe’s C. Auguste Dupin.