Boolean operators must be used in Advanced searches. Use quotes for words that must appear together. Simple Search also recognizes commonly-used phrases without the use of quotes. Use keywords that clearly describe topic. Boolean operators AND, NOT, ADJ used.
Searches are case sensitive.
Advanced searching allows for various limiting options. Results are divided by Encyclopedia Britannica Web's Best Sites Magazine Articles Related Books HotBot Searches full-text on most web sites. Boolean operators AND, OR, NOT and parentheses used. Operators must be in caps. Pull-down menus help narrow search.