(May 23, 2013)
Google normally searches for pages that contain all the words you type in the search box, but if you want pages that have one term or another (or both), use the OR operator -- or use the "|" symbol (pipe symbol) to save you a keystroke. [standing | buddha]
If you want to search for an exact phrase, use quotes. ["standing buddha"] will only find that exact phrase.
If you don't want a term or phrase, use the "-" symbol. [-standing buddha statue] will return pages that contain "buddha" and "statue" but that don't contain "standing".
Use the "~" symbol to return similar terms. [~sitting bodhisattva -standing] will get you pages that contain "sitting boddhisattva", "sitting" and "bodhisattva" but not "standing boddhisattva".
The "*" symbol is a wildcard. This is useful if you're trying to find a phrase, but can't remember the exact phrase. [* of a standing Buddha] will return "Sculpture of a standing Buddha" or "Torso of a Standing Buddha".