like: She told me that she wants to go to South America next year. > She told me that she wanted to go to South America next year. → →
1901
She told me that she wants to go to South America next year. > She told me that she wanted to go to South America next year. ☊ 
Cô ấy bảo tôi rằng sang năm cô ấy muốn đi Nam Mĩ. > Cô ấy bảo tôi rằng sang năm cô ấy muốn đi Nam Mĩ. ☊