Perhaps you should try some spelling variations:
hanh trung » thanh trung, hanh trang, manh trung
trung tuan » trung thanh, trung tam, tran tuan
dong thanh » truong thanh
hien hanh » dieu hanh
tuan tong » toan tong, thuan trong, toan thong
hien anh » thien anh, dien anh, tien anh
cong tan » cong tac, cong san, cong thanh
tran cau » tran chau, toan cau, ran cau

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 anh) OR (hien hanh)) - hanh trung tuan tong ((cong tan) or (dong thanh)) tran cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hien anh) OR (hien hanh)) - hanh trung tuan tong ((cong tan) OR (dong thanh)) tran cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((hien anh) OR (hien hanh)) - hanh trung tuan tong ((cong tan) or (dong thanh)) tran cau".
• Adding a wildcard symbol may retrieve word variants: hoc ((hien anh) OR (hien hanh)) - hanh trung tuan tong ((cong tan) or (dong thanh)) tran cau*.