Perhaps you should try some spelling variations:
theo chieu » theo tieu, ho chieu, theo chu
chieu sach » chinh sach, chiet tach, chieu sang
cua nhung » va nhung
hanh dan » thanh dan, hanh san, canh dan
cong tan » cong san, cong thanh, cong ty
cong tac » cong ty
tran van » luan van
dan cua » dan ca, ban cua, dai cua

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 - hanh dan cua nhung ((cong tan) or (cong tac)) tran van~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chieu sach - hanh dan cua nhung ((cong tan) OR (cong tac)) tran van*.