Perhaps you should try some spelling variations:
khong cong » thong cong, khong cang, chong cong
hanh trinh » hanh chinh
hua khong » hoa khong, cua khong, hoac khong
chi xanh » chi anh, chi danh, chieu xanh
chi hanh » chi nhanh, chi thanh, thi hanh
cong dan » cong san, cong tan, huong dan
dan toan » van toan, dan than, manh toan
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: doi ((chi xanh) or (chi hanh)) - ((hanh trinh) or (canh tranh)) hua khong cong dan toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi ((chi xanh) OR (chi hanh)) - ((hanh trinh) OR (canh tranh)) hua khong cong dan toan cao.
• Adding a wildcard symbol may retrieve word variants: doi ((chi xanh) or (chi hanh)) - ((hanh trinh) or (canh tranh)) hua khong cong dan toan cao*.