"Bạn đang làm tốt hơn bạn nghĩ."

Translation: You are doing better than you think.

[eyelovemetal]

That one was encouraging to figure out without hovering over the words. Thanks for that!

[Thomas457134]

Where did the "than" come from??

[JCMcGee]

It's the English construction.
Tot hon... Better than