Perhaps you should try some spelling variations:
doi chieu » doi chi, ho chieu, mot chieu
tuong cua » truong cua, huong cua, thong cua
cong cong » cong dong, trong cong, dung cong
san thanh » ban thanh, van thanh, son thanh
thanh cau » thanh chau, thanh mau, nhanh cau
doc hieu » toc thieu, hoc thieu, hoc hien
thong tu » phong tuc, thong tin, thong ke
cong san » cong tac

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 - thanh ((tuong cua) or (thong tu)) cong cong san thanh cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doi chieu) OR (doc hieu)) sach - thanh ((tuong cua) OR (thong tu)) cong cong san thanh cau*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((doi chieu) OR (doc hieu)) sach - thanh ((tuong cua) or (thong tu)) cong cong san thanh cau*".