Perhaps you should try some spelling variations:
thanh trung » thanh tung
theo chieu » ho chieu, theo chu, thi chieu
trung hoc » trung quoc
hang cong » dang cong, hang nong, bang cong
hoc hang » hoc hanh, hoc bang, hoc tang
cong dan » cong san, cong tan, huong dan
toan cao » toan tap
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 hoc hang cong dan ((toan cao) or (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((theo chieu) OR (theo tieu)) sach - thanh trung hoc hang cong dan ((toan cao) OR (toan ban)).
• Adding a wildcard symbol may retrieve word variants: ((theo chieu) or (theo tieu)) sach - thanh trung hoc hang cong dan ((toan cao) or (toan ban))*.