Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
thong cong » trong cong, tong cong, thong thong
hoc chieu » hoc thieu, ho chieu, hoc hien
hanh tang » hanh trang, anh tang, hanh tung
hanh mang » nhanh mang, hanh trang, nhanh lang
cua thong » cua thuong, cua khong, cua tong
chinh cau » chinh chau, chinh can, chinh tai
cong san » cong tac
chinh ca » chinh ta, chinh va, chinh tai

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 - ((hanh tang) or (hanh mang)) cua thong cong san ((chinh cau) or (chinh ca))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc chieu sach - ((hanh tang) OR (hanh mang)) cua thong cong san ((chinh cau) OR (chinh ca)).
• Adding a wildcard symbol may retrieve word variants: hoc chieu sach - ((hanh tang) or (hanh mang)) cua thong cong san ((chinh cau) or (chinh ca))*.