Perhaps you should try some spelling variations:
thien manh » tien manh, thien anh, thien danh
hanh trinh » canh tranh, hanh chinh
ton thien » hoan thien, toan thiet, doan thien
tong cong » trong cong, cong cong, dung cong
trinh va » trinh van, trinh vat, trinh ve
san toan » van toan, manh toan, xuan toan
dan toan » van toan, dan than, manh toan
va tong » va thong, va tuong, va trong

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

• Performing a fuzzy search may retrieve terms with similar spellings: ton thien manh - hanh trinh va tong cong ((san toan) OR (dan toan)) cao~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ton thien manh - hanh trinh va tong cong ((san toan) OR (dan toan)) cao".
• Adding a wildcard symbol may retrieve word variants: ton thien manh - hanh trinh va tong cong ((san toan) OR (dan toan)) cao*.