Perhaps you should try some spelling variations:
hien nhanh » thien thanh, tien thanh, vien nganh
dien thanh » den thanh, tien thanh, dinh thanh
thanh tung » thanh cong
nhung cong » dung cong, thong cong, hang cong
hien hanh » dieu hanh
cua nhung » va nhung
tung cua » trung cua, tuong cua, dung cua
cong dan » cong san, cong tan, huong dan
dan toan » van toan, dan than, manh toan
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 nhanh) OR (dien thanh))) or (hien hanh)) - thanh tung cua nhung cong dan toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((((hien nhanh) OR (dien thanh))) OR (hien hanh)) - thanh tung cua nhung cong dan toan cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((((hien nhanh) OR (dien thanh))) or (hien hanh)) - thanh tung cua nhung cong dan toan cao".
• Adding a wildcard symbol may retrieve word variants: hoc ((((hien nhanh) OR (dien thanh))) or (hien hanh)) - thanh tung cua nhung cong dan toan cao*.