Perhaps you should try some spelling variations:
tieu sach » chieu sach, dien sach, te sach
hanh mang » nhanh mang, hanh trang, nhanh lang
luan dang » luan danh, luan dong, luan tang
luan nang » luan van, van nang, luan san
cong dan » cong san, cong tan, huong dan
than cau » toan cau, phan cau, thanh chau
than cap » khan cap, thanh lap, thanh cac

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 mang ((luan dang) OR (luan nang)) cong dan ((than cau) or (than cap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo tieu sach - hanh mang ((luan dang) OR (luan nang)) cong dan ((than cau) OR (than cap)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo tieu sach - hanh mang ((luan dang) OR (luan nang)) cong dan ((than cau) or (than cap))".
• Adding a wildcard symbol may retrieve word variants: theo tieu sach - hanh mang ((luan dang) OR (luan nang)) cong dan ((than cau) or (than cap))*.