Perhaps you should try some spelling variations:
thiet tach » chiet tach, thien hach, thuat tach
ho thiet » hoc thiet, hoa thiet, so thiet
tranh va » tranh van, trang va, trinh va
cong dan » cong tan, huong dan, cong dong
cong san » cong tac
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 - canh tranh va nhung ((cong dan) or (cong san)) ((than cau) or (phan cau))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho thiet tach - canh tranh va nhung ((cong dan) OR (cong san)) ((than cau) OR (phan cau)).
• Adding a wildcard symbol may retrieve word variants: ho thiet tach - canh tranh va nhung ((cong dan) or (cong san)) ((than cau) or (phan cau))*.