Complex sentence: For more than a thousand years sawndip have been used, they are rather like Vietnamese Chữ nôm-some sawndip logograms are borrowed directly from Han characters, and some are original characters made up from the components of Chinese characters.
Split into simpler sentences: For more than a thousand years sawndip have been used. Some sawndip logograms are borrowed directly from Han characters, and some are original characters made up from the components of Chinese characters.