Perhaps you should try some spelling variations:
hien nhanh » thien thanh, tien thanh, dien thanh
hanh trung » thanh trung, hanh trang, manh trung
hien hanh » dieu hanh
trung cap » truong cao, trung tam
cap dang » cao dang, cac dang, cap bang
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) OR (hien hanh)) - hanh trung cap dang ((huong dan) or (cong tan)) than cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hien nhanh) OR (hien hanh)) - hanh trung cap dang ((huong dan) OR (cong tan)) than cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((hien nhanh) OR (hien hanh)) - hanh trung cap dang ((huong dan) or (cong tan)) than cau".
• Adding a wildcard symbol may retrieve word variants: hoc ((hien nhanh) OR (hien hanh)) - hanh trung cap dang ((huong dan) or (cong tan)) than cau*.