Perhaps you should try some spelling variations:
tieu sach » chieu sach, dien sach, te sach
hanh tang » hanh trang, anh tang, hanh mang
tang luan » dung luan
luan dung » lan dung, luan dong, luan hung
cong dan » cong san, cong tan, cong dong
toan cao » toan tap
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: theo tieu sach - hanh tang luan dung ((cong dan) or (huong dan)) ((toan cao) or (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo tieu sach - hanh tang luan dung ((cong dan) OR (huong dan)) ((toan cao) OR (toan ban)).
• Adding a wildcard symbol may retrieve word variants: theo tieu sach - hanh tang luan dung ((cong dan) or (huong dan)) ((toan cao) or (toan ban))*.