Perhaps you should try some spelling variations:
phuong cong » phuong dong, phong cong, phung cong
chiet tach » chieu sach
hanh tranh » hanh trinh, hanh trang, lanh tranh
hoc chiet » hoc thiet, hoc nhiet, hoc hien
va phuong » va thuong, cac phuong
thanh ban » thanh san, thanh van, thanh bac
cong dan » cong san, cong tan, huong dan
toan ban » van ban

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: hoc chiet tach - ((hanh tranh) OR (canh tranh)) va phuong cong dan ((thanh ban) or (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc chiet tach - ((hanh tranh) OR (canh tranh)) va phuong cong dan ((thanh ban) OR (toan ban)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc chiet tach - ((hanh tranh) OR (canh tranh)) va phuong cong dan ((thanh ban) or (toan ban))".
• Adding a wildcard symbol may retrieve word variants: hoc chiet tach - ((hanh tranh) OR (canh tranh)) va phuong cong dan ((thanh ban) or (toan ban))*.