Perhaps you should try some spelling variations:
theo chieu » theo tieu, ho chieu, theo chu
chieu sach » chinh sach, chiet tach, chieu sang
hanh tran » hanh trang, thanh tran, hanh tram
tran van » luan van
van dang » van dong, van dung, van nang
cong tac » cong ty
than ban » thanh ban, toan ban, than man

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 tran van dang ((cong tac) or (huong dan)) than ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chieu sach - hanh tran van dang ((cong tac) OR (huong dan)) than ban.
• Adding a wildcard symbol may retrieve word variants: theo chieu sach - hanh tran van dang ((cong tac) or (huong dan)) than ban*.