Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
nhanh tinh » nhanh thanh, hanh trinh, nhan sinh
chat nhung » chat ngung, thuat nhung, cua nhung
nhung cong » dung cong, thong cong, hang cong
cong san » cong tac
can cau » van cau, ca cau, cac cau
ban cau » bang cau, ban can, van cau

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 sach) or (trieu tinh)) - nhanh tinh chat nhung cong san ((can cau) OR (ban cau))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi ((chieu sach) OR (trieu tinh)) - nhanh tinh chat nhung cong san ((can cau) OR (ban cau)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi ((chieu sach) or (trieu tinh)) - nhanh tinh chat nhung cong san ((can cau) OR (ban cau))".
• Adding a wildcard symbol may retrieve word variants: doi ((chieu sach) or (trieu tinh)) - nhanh tinh chat nhung cong san ((can cau) OR (ban cau))*.