Perhaps you should try some spelling variations:
thanh trung » thanh tung
theo chieu » ho chieu, theo chu, thi chieu
cac phuong » cac truong
cuu phuong » thu phuong
trung cua » truong cua, trung tuan, trung cap
manh toan » thanh toan, anh tuan, tinh toan
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: ((theo chieu) OR (theo tieu)) sach - thanh trung cua ((cac phuong) or (cuu phuong)) manh toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((theo chieu) OR (theo tieu)) sach - thanh trung cua ((cac phuong) OR (cuu phuong)) manh toan ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((theo chieu) OR (theo tieu)) sach - thanh trung cua ((cac phuong) or (cuu phuong)) manh toan ban".
• Adding a wildcard symbol may retrieve word variants: ((theo chieu) OR (theo tieu)) sach - thanh trung cua ((cac phuong) or (cuu phuong)) manh toan ban*.