Perhaps you should try some spelling variations:
thanh trung » thanh tung
trung tuan » trung thanh, trung tam, tran tuan
doi chieu » doc hieu, doi chi, mot chieu
tuan dung » tuan duong, tran dung, tan dung
thanh cac » hanh cac, thanh bac, thanh ca
ho chieu » theo chieu, hoc thieu, mot chieu
cong dan » cong san, huong dan, cong dong
cong tan » cong tac, cong san, cong thanh

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((ho chieu) OR (doi chieu)) sach - thanh trung tuan dung ((cong dan) or (cong tan)) thanh cac~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chieu) OR (doi chieu)) sach - thanh trung tuan dung ((cong dan) OR (cong tan)) thanh cac.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho chieu) OR (doi chieu)) sach - thanh trung tuan dung ((cong dan) or (cong tan)) thanh cac".
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) OR (doi chieu)) sach - thanh trung tuan dung ((cong dan) or (cong tan)) thanh cac*.