Perhaps you should try some spelling variations:
hien nhanh » hien hanh, thien thanh, tien thanh
khong cong » thong cong, khong cang, chong cong
hien xanh » hien hanh, chieu xanh, hien khanh
tran tuan » tran quang, tran thanh, tranh luan
tran xuan » tran quang, tran van
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 ((hien xanh) OR (hien nhanh)) - thanh ((tran tuan) OR (tran xuan)) khong cong tac toan tap~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((hien xanh) or (hien nhanh)) - thanh ((tran tuan) OR (tran xuan)) khong cong tac toan tap~".
• Adding a wildcard symbol may retrieve word variants: hoc ((hien xanh) or (hien nhanh)) - thanh ((tran tuan) OR (tran xuan)) khong cong tac toan tap*.