Perhaps you should try some spelling variations:
chiet tach » chieu sach
bien tinh » bi tinh, yen tinh, diep tinh
dung cong » dung trong
hanh ban » thanh ban, hang ban, hanh san
cua dung » cua dang, cua dong, qua dung
cong san » cong tac
ban cua » ban quan
san van » tan van, luan van, tran van

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo ((chiet tach) or (((bien tinh) or (trieu tinh)))) - hanh ban cua dung cong san van ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chiet tach) OR (((bien tinh) OR (trieu tinh)))) - hanh ban cua dung cong san van ban.
• Adding a wildcard symbol may retrieve word variants: theo ((chiet tach) or (((bien tinh) or (trieu tinh)))) - hanh ban cua dung cong san van ban*.