Perhaps you should try some spelling variations:
thanh trung » thanh tung
thanh trang » hanh trang, thanh thang, thanh tran
chieu sach » chinh sach, chiet tach, chieu sang
hoc chieu » hoc thieu, ho chieu, hoc hien
vat dung » van dung, va dung, viet dung
cong dan » cong san, cong tan, cong dong
toan ban » van ban

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 - ((thanh trang) OR (thanh trung)) vat dung ((cong dan) or (huong dan)) toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc chieu sach - ((thanh trang) OR (thanh trung)) vat dung ((cong dan) OR (huong dan)) toan ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc chieu sach - ((thanh trang) OR (thanh trung)) vat dung ((cong dan) or (huong dan)) toan ban".
• Adding a wildcard symbol may retrieve word variants: hoc chieu sach - ((thanh trang) OR (thanh trung)) vat dung ((cong dan) or (huong dan)) toan ban*.