The Vietnamese word "bù đầu" is an informal expression that means to be extremely busy or overwhelmed, especially with work or tasks. It conveys the idea that someone has so much work to do that they feel buried under it, similar to the English phrase "over one's head."
Làm bù đầu suốt ngày
Translation: "To be over head and ears in work the whole day."
Meaning: This indicates that the person has been busy all day with work and has little time for anything else.
Bù đầu với những con số
Translation: "To be over head and ears in figures."
Meaning: This suggests that someone is dealing with many numbers or data, likely in a financial or mathematical context, and feels overwhelmed.