Perhaps you should try some spelling variations:
thong cong » trong cong, tong cong, thong thong
hanh trinh » hanh chinh
cong toan » cong tan, cong hoan, cong doan
cong tuan » cong tan, cong luan, cong thanh
chi xanh » chi anh, chi danh, chi hanh
va thong » va thuong, va phuong, he thong
doi chi » doi khi

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 - ((canh tranh) or (hanh trinh)) va thong cong ((cong toan) OR (cong tuan)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chi xanh - ((canh tranh) OR (hanh trinh)) va thong cong ((cong toan) OR (cong tuan)) cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi chi xanh - ((canh tranh) or (hanh trinh)) va thong cong ((cong toan) OR (cong tuan)) cau".
• Adding a wildcard symbol may retrieve word variants: doi chi xanh - ((canh tranh) or (hanh trinh)) va thong cong ((cong toan) OR (cong tuan)) cau*.