Perhaps you should try some spelling variations:
doi chieu » doc hieu, doi chi, ho chieu
hoc thieu » toc thieu, hoc hien
hanh tinh » hanh trinh, nhanh tinh, thanh tinh
chat dung » chan dung, chat luong, chat quang
dung cong » dung trong
cong san » cong tac
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: ((((doi chieu) or (hoc thieu))) or (theo tieu)) xanh - hanh tinh chat dung cong san van ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((((doi chieu) OR (hoc thieu))) OR (theo tieu)) xanh - hanh tinh chat dung cong san van ban.
• Adding a wildcard symbol may retrieve word variants: ((((doi chieu) or (hoc thieu))) or (theo tieu)) xanh - hanh tinh chat dung cong san van ban*.