Perhaps you should try some spelling variations:
trang tuan » tran tuan, trung tuan, trong tuan
trong quan » thong quan, tong quan, thong quang
hieu manh » chieu xanh, hieu nganh, dieu hanh
dung cong » dung trong
hoc hieu » hoc thieu, hoc hien, doc hieu
cong tac » cong ty
tac toan » tap toan, tam toan, hach toan
toan tap » toan ban

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hieu manh - hanh ((trang tuan) OR (trong quan)) dung cong tac toan tap~.
• Adding a wildcard symbol may retrieve word variants: hoc hieu manh - hanh ((trang tuan) or (trong quan)) dung cong tac toan tap*.