Perhaps you should try some spelling variations:
thanh trung » thanh tung
hien hanh » dieu hanh
tong cong » trong cong, cong cong, dung cong
tien anh » tieng anh, tien manh, dien anh
tam tong » tai tong, tam nong, tam song
cong ban » cong bang, cong san, cong tan
chan cap » than cap, cao cap, phan cac
khan cap » khan ap, than cap, khoan cam

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