Perhaps you should try some spelling variations:
thanh trung » thanh tung
trung tuan » trung thanh, trung tam, tran tuan
tuan nhung » quan nhung, tuan hung, thuat nhung
nhung cong » dung cong, thong cong, hang cong
hoc chinh » hoan chinh, hoc sinh, hoc kinh
ho chinh » cho chinh, hoa chinh, do chinh
cong dan » cong san, cong tan, huong dan
chan cau » phan cau, chinh cau, nhanh cau
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: ((ho chinh) or (hoc chinh)) sach - thanh trung tuan nhung cong dan ((chan cau) OR (can cau))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chinh) OR (hoc chinh)) sach - thanh trung tuan nhung cong dan ((chan cau) OR (can cau)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho chinh) or (hoc chinh)) sach - thanh trung tuan nhung cong dan ((chan cau) OR (can cau))".
• Adding a wildcard symbol may retrieve word variants: ((ho chinh) or (hoc chinh)) sach - thanh trung tuan nhung cong dan ((chan cau) OR (can cau))*.