Perhaps you should try some spelling variations:
doi khieu » doi chieu, doc hieu, doi hien
hanh hang » thanh hang, hang hang, hanh mang
dang cong » dung cong
hanh han » hanh nhan, hanh phan, hanh san
cua dang » cua cong, cua ban
cong tan » cong tac, cong san, cong thanh
tan van » tran van, tang van, luan 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 khieu) or (doi khi)) xanh - ((hanh hang) OR (hanh han)) cua dang cong tan van ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doi khieu) OR (doi khi)) xanh - ((hanh hang) OR (hanh han)) cua dang cong tan van ban*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((doi khieu) or (doi khi)) xanh - ((hanh hang) OR (hanh han)) cua dang cong tan van ban*".