Perhaps you should try some spelling variations:
chieu sach » chinh sach, chieu sang, chieu xanh
nhung cong » dung cong, thong cong, hang cong
cua nhung » va nhung
cong tan » cong tac, cong san, cong thanh
tran van » luan van
anh ban » anh bang, anh bai, anh van
ban cua » ban quan

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: theo ((chieu sach) or (chiet tach)) - anh ban cua nhung cong tan tran van~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chieu sach) OR (chiet tach)) - anh ban cua nhung cong tan tran van.
• Adding a wildcard symbol may retrieve word variants: theo ((chieu sach) or (chiet tach)) - anh ban cua nhung cong tan tran van*.