Perhaps you should try some spelling variations:
hien nhanh » hien hanh, thien thanh, tien thanh
hanh trung » thanh trung, hanh trang, manh trung
trung cua » truong cua, trung tuan, trung cap
cua bang » chua bang, cua ban, cua dang
cong tan » cong tac, cong san, cong thanh
than cau » toan cau, phan cau, than cap

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc hien nhanh - hanh trung cua bang ((huong dan) or (cong tan)) than cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien nhanh - hanh trung cua bang ((huong dan) OR (cong tan)) than cau.
• Adding a wildcard symbol may retrieve word variants: hoc hien nhanh - hanh trung cua bang ((huong dan) or (cong tan)) than cau*.