Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
chieu xanh » chieu sang, chieu tinh, hieu manh
hanh tinh » hanh trinh, nhanh tinh, thanh tinh
cua nhung » va nhung
thanh man » thanh san, thanh van, thanh mau
tinh cua » trinh cua, sinh cua, tinh chat
cong ban » cong bang, cong tan, cong dan
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: hoc ((chieu sach) or (chieu xanh)) - hanh tinh cua nhung ((cong ban) OR (cong san)) thanh man~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((chieu sach) OR (chieu xanh)) - hanh tinh cua nhung ((cong ban) OR (cong san)) thanh man.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((chieu sach) or (chieu xanh)) - hanh tinh cua nhung ((cong ban) OR (cong san)) thanh man".
• Adding a wildcard symbol may retrieve word variants: hoc ((chieu sach) or (chieu xanh)) - hanh tinh cua nhung ((cong ban) OR (cong san)) thanh man*.