Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
hanh trang » thanh trung, canh tranh, hanh trinh
hoc chieu » hoc thieu, ho chieu, hoc hien
trang va » tran van, hang va
cong tac » cong ty
cong tan » cong san, cong thanh, cong ty
phan van » pham van, thanh van, luan van
phan dau » phan tu, hang dau

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 trang va nhung ((cong tac) or (cong tan)) ((phan van) or (phan dau))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc chieu sach - hanh trang va nhung ((cong tac) OR (cong tan)) ((phan van) OR (phan dau)).
• Adding a wildcard symbol may retrieve word variants: hoc chieu sach - hanh trang va nhung ((cong tac) or (cong tan)) ((phan van) or (phan dau))*.