Here are sentences using the words and phrases you provided:

1. Some groups like the Tay, Hmong, and Dao mostly live in the mountainous regions of the north.

2. The "ethnic minority peoples" speak their own languages and have their own life customs and traditions.

3. Our country’s government always takes care of people's lives, especially the ethnic groups'.

4. The Muong in Hoa Binh and Thanh Hoa are well-known for their rich folk literature and traditional songs.

5. Many ethnic minority children in remote or mountainous areas are studying at boarding schools.