Perhaps you should try some spelling variations:
hien nhanh » thien thanh, tien thanh, vien nganh
dien thanh » den thanh, tien thanh, dinh thanh
hien hanh » dieu hanh
tranh cua » doanh cua, manh cua
dan toan » van toan, dan than, manh toan
toan tap » toan ban
cua anh » cua manh, cua banh, ca anh

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)) - canh tranh cua anh huong dan toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((((hien nhanh) OR (dien thanh))) OR (hien hanh)) - canh tranh cua anh huong dan toan tap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((((hien nhanh) OR (dien thanh))) or (hien hanh)) - canh tranh cua anh huong dan toan tap".
• Adding a wildcard symbol may retrieve word variants: hoc ((((hien nhanh) OR (dien thanh))) or (hien hanh)) - canh tranh cua anh huong dan toan tap*.