Perhaps you should try some spelling variations:
doi chieu » doi chi, ho chieu, mot chieu
huong cua » dung cua
dong cong » duong cong, dung cong, dang cong
chang dam » chang ham, hang dam, hang dau
doc hieu » toc thieu, hoc thieu, hoc hien
cua dong » chua dong, cua cong, cua dang
cong tan » cong tac, cong san, cong thanh
than cap » khan cap, thanh lap, thanh cac

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 (doc hieu)) sach - anh huong cua dong cong tan ((than cap) or (chang dam))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doi chieu) OR (doc hieu)) sach - anh huong cua dong cong tan ((than cap) OR (chang dam)).
• Adding a wildcard symbol may retrieve word variants: ((doi chieu) or (doc hieu)) sach - anh huong cua dong cong tan ((than cap) or (chang dam))*.