Perhaps you should try some spelling variations:
thinh sach » chinh sach, tinh sach, sinh sach
thang long » thanh cong
tranh xua » tranh cua, tranh luan, thanh xuan
xua thang » xuan thang, xuan thanh, xuan trang
tan toan » tan tran, van toan, dan toan
tap toan » tap doan, tap quan
bai toan » bai tap
tien » tieng, bien, vien

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

• Performing a fuzzy search may retrieve terms with similar spellings: tien thinh sach - canh tranh xua thang long ((tan toan) or (((tap toan) OR (bai toan)))) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tien thinh sach - canh tranh xua thang long ((tan toan) OR (((tap toan) OR (bai toan)))) cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tien thinh sach - canh tranh xua thang long ((tan toan) or (((tap toan) OR (bai toan)))) cau".
• Adding a wildcard symbol may retrieve word variants: tien thinh sach - canh tranh xua thang long ((tan toan) or (((tap toan) OR (bai toan)))) cau*.