Perhaps you should try some spelling variations:
trung tuan » trung thanh, trung tam, tran tuan
hieu lang » chieu sang, hieu quang, nhieu tang
trung cua » truong cua, trung cap, dung cua
thanh cau » thanh chau, thanh mau, nhanh cau
cong ban » cong bang, cong san, cong dan
cong tan » cong tac, cong san, cong thanh
ho hieu » ho chieu, hoi hieu, nho hieu

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

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