Complex sentence: The university's central and original campus, Tha Phrachan Centre, is located in Phra Nakhon, Bangkok, while Rangsit Centre, the largest campus where most undergraduate programmes are currently held, is located in Khlong Luang, Pathum Thani.
Split into simpler sentences: The university's original campus, Tha Phrachan Centre, is located in Phra Nakhon, Bangkok, while Rangsit Centre. The Rangsit campus, where most undergraduate programmes are currently held, is in Khlong Luang, Pathum Thani.