Perhaps you should try some spelling variations:
thanh tung » thanh cong
chong cong » cong cong, thong cong, cuong cong
hien danh » thien danh, hien nhanh, hien khanh
hien hanh » dieu hanh
cua chong » cua cong, cua chung, cua khong
tung cua » trung cua, tuong cua, dung cua
cong tan » cong tac, cong san, cong thanh
than cau » phan cau, than cap, thanh chau
toan cau » toan cao, toan ban, toan tap

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