Perhaps you should try some spelling variations:
thanh trung » thanh tung
hanh trinh » canh tranh, hanh chinh
cong cong » cong dong, trong cong, dung cong
ho chiet » ho chieu, hoc thiet, hoa thiet
ho thiet » hoc thiet, hoa thiet, so thiet
cong tac » cong ty
tac toan » tap toan, tam toan, hach toan
toan cau » toan cao, toan ban, toan tap

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 - ((hanh trinh) or (thanh trung)) cua cong cong tac toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chiet) OR (ho thiet)) tach - ((hanh trinh) OR (thanh trung)) cua cong cong tac toan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho chiet) OR (ho thiet)) tach - ((hanh trinh) or (thanh trung)) cua cong cong tac toan cau".
• Adding a wildcard symbol may retrieve word variants: ((ho chiet) OR (ho thiet)) tach - ((hanh trinh) or (thanh trung)) cua cong cong tac toan cau*.