phụ tá 
assistant, aide; to aide, assist [ phụ ] : to help, assist, aid; secondary, attached, assistant, auxiliary
[ tá ] : dozen
Most Common Compounds Set 1:
Most Common Compounds Set 2 :
phụ tá giám đốc assistant director phụ tá assistant, aide; to aide, assist phụ tá giám đốc assistant director