Perhaps you should try some spelling variations:
phuong cong » phuong dong, phong cong, phung cong
thanh trung » thanh tung
chieu sach » chinh sach, chiet tach, chieu sang
hoc chieu » hoc thieu, ho chieu, hoc hien
va phuong » va thuong, cac phuong
sang than » cang thang, dang thanh, sang tao
san than » san thanh, ban than, van than

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc chieu sach - ((canh tranh) or (thanh trung)) va phuong cong ((san than) OR (sang than)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc chieu sach - ((canh tranh) OR (thanh trung)) va phuong cong ((san than) OR (sang than)) cau*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc chieu sach - ((canh tranh) or (thanh trung)) va phuong cong ((san than) OR (sang than)) cau*".