Perhaps you should try some spelling variations:
doi chieu » doi chi, ho chieu, mot chieu
hanh manh » hanh mang, lanh manh, hoang manh
cong cong » cong dong, trong cong, dung cong
doc hieu » toc thieu, hoc thieu, hoc hien
manh cua » doanh cua, ban cua
dan than » ban than, van than, dan toan
dan chan » dan gian, dan ca, van chat

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 - hanh manh cua cong cong ((dan than) or (dan chan)) man~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doi chieu) OR (doc hieu)) sach - hanh manh cua cong cong ((dan than) OR (dan chan)) man.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((doi chieu) OR (doc hieu)) sach - hanh manh cua cong cong ((dan than) or (dan chan)) man".
• Adding a wildcard symbol may retrieve word variants: ((doi chieu) OR (doc hieu)) sach - hanh manh cua cong cong ((dan than) or (dan chan)) man*.