Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu xanh
chieu sang » chieu xanh, hieu lang, nhieu tang
cua thuong » cua phuong, ca thuong, cua huong
cua truong » cua trung, xuan truong, cac truong
cong thanh » dong thanh, cong trinh, cong tan
thanh than » thanh thanh, thanh thang, thanh toan
anh tang » anh bang, anh dang, anh nang
than cap » khan cap, thanh lap, thanh cac

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chieu sach) OR (chieu sang)) - anh tang ((cua thuong) OR (cua truong)) cong thanh than cap~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((chieu sach) or (chieu sang)) - anh tang ((cua thuong) OR (cua truong)) cong thanh than cap~".
• Adding a wildcard symbol may retrieve word variants: theo ((chieu sach) or (chieu sang)) - anh tang ((cua thuong) OR (cua truong)) cong thanh than cap*.