Complex sentence: Much of Vietnam's vast, written history is, in effect, largely inaccessible to the 80 million speakers of the language, although a few Buddhist monks and the Jing, the Vietnamese living in China, can read "nôm" to some extent.
Split into simpler sentences: Much of Vietnam's written history is inaccessible to the 80 million speakers of the language. A few Buddhist monks and the Jing, the Vietnamese living in China, can read "nôm" to some extent.