Perhaps you should try some spelling variations:
thiet tach » chiet tach, thien hach, thuat tach
trung tuan » trung thanh, trung tam, tran tuan
nhung cong » dung cong, thong cong, hang cong
thanh chau » thanh cha, thanh cham, thanh chu
trung cua » truong cua, trung cap, dung cua
ho thiet » hoc thiet, hoa thiet, so thiet
cong dan » cong san, cong tan, huong dan
phan cau » phan dau, phan cac, phan tu

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

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