"Tao Te Ching" or "Tao Teh Ching" or "Daode jing" and other variations on the same are pronounced close to "dow duh jing" with the last word having the initial sound of "jet" and the final sound of...
Tao is part of the religion Taoism, based in ancient China. It is one, highly spiritual, part of the religion, and impossible to define. The character 道 translates as "way."