Perhaps you should try some spelling variations:
thanh trung » thanh tung
chiet tach » chieu sach
tong cong » trong cong, cong cong, dung cong
ho chiet » ho chieu, ho thiet, hoc thiet
trung ha » trung hoc, trung tam, trung cap
cong san » cong tac
than cap » khan cap, thanh lap, thanh cac
thanh ca » thanh cha, thanh cac, thanh ha
ha tong » han tong, ha dong, ha tang

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho chiet tach - thanh trung ha tong cong san ((than cap) or (thanh ca))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chiet tach - thanh trung ha tong cong san ((than cap) OR (thanh ca)).
• Adding a wildcard symbol may retrieve word variants: ho chiet tach - thanh trung ha tong cong san ((than cap) or (thanh ca))*.