Perhaps you should try some spelling variations:
thanh trung » thanh tung
thiet tach » chiet tach, thien hach, thuat tach
trung cua » truong cua, trung tuan, trung cap
dung cong » dung trong
ho thiet » hoc thiet, hoa thiet, so thiet
cua dung » cua dang, cua dong, qua dung
cong dan » cong san, cong tan, huong dan
than cau » toan cau, than cap, thanh chau
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 dung cong dan ((than cau) or (phan cau))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho thiet tach - thanh trung cua dung cong dan ((than cau) OR (phan cau)).
• Adding a wildcard symbol may retrieve word variants: ho thiet tach - thanh trung cua dung cong dan ((than cau) or (phan cau))*.