Perhaps you should try some spelling variations:
chieu tach » chiet tach, chieu sach, chiu trach
nhung cong » dung cong, thong cong, hang cong
hanh hang » thanh hang, hang hang, hanh mang
cua nhung » va nhung
ho chieu » theo chieu, hoc thieu, doi chieu
hanh han » hanh nhan, hanh phan, hanh san
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: ho chieu tach - ((hanh hang) OR (hanh han)) cua nhung cong san van ban~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu tach - ((hanh hang) OR (hanh han)) cua nhung cong san van ban*".