Perhaps you should try some spelling variations:
thanh tung » thanh cong
thong cong » trong cong, tong cong, thong thong
cua thong » cua thuong, cua khong, cua tong
ho chiet » ho chieu, hoc thiet, hoa thiet
ho thiet » hoc thiet, hoa thiet, so thiet
tung cua » trung cua, tuong cua, dung cua
cong san » cong tac
ban cau » bang cau, ban can, van cau
ca cau » cua cau, cac cau, can 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 chiet) OR (ho thiet)) tach - thanh tung cua thong cong san ((ca cau) or (ban cau))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chiet) OR (ho thiet)) tach - thanh tung cua thong cong san ((ca cau) OR (ban cau)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho chiet) OR (ho thiet)) tach - thanh tung cua thong cong san ((ca cau) or (ban cau))".
• Adding a wildcard symbol may retrieve word variants: ((ho chiet) OR (ho thiet)) tach - thanh tung cua thong cong san ((ca cau) or (ban cau))*.