Perhaps you should try some spelling variations:
thanh trung » thanh tung
theo chieu » theo tieu, ho chieu, theo chu
phuong dan » phuong danh, phuong doan, huong dan
hoc thieu » toc thieu, hoc hien
trung cua » truong cua, trung tuan, trung cap
cua bang » chua bang, cua ban, cua dang
dan can » dan chan, dan canh, dan ca
can cau » van cau, ban cau, ca cau

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 (hoc thieu)) sach - thanh trung cua bang phuong dan can cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((theo chieu) OR (hoc thieu)) sach - thanh trung cua bang phuong dan can cau*.