Perhaps you should try some spelling variations:
chiet tach » chieu sach
hoc chiet » hoc thiet, hoc nhiet, hoc hien
hanh tang » hanh trang, anh tang, hanh mang
cua thong » cua thuong, cua khong, cua tong
tang cua » mang cua, hang cua, tang luan
cong tan » cong san, cong thanh, cong ty
cong tac » cong ty
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: hoc chiet tach - hanh tang cua thong ((cong tan) OR (cong tac)) toan ban~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc chiet tach - hanh tang cua thong ((cong tan) OR (cong tac)) toan ban".
• Adding a wildcard symbol may retrieve word variants: hoc chiet tach - hanh tang cua thong ((cong tan) OR (cong tac)) toan ban*.