Perhaps you should try some spelling variations:
khong cong » thong cong, khong cang, chong cong
hanh trinh » canh tranh
cua khong » hua khong, cua phuong, cua thuong
chi xanh » chi anh, chi danh, chi hanh
tan toan » tan tran, tap toan, dan toan
van toan » van tuan, van tan, van thanh
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 - ((hanh trinh) or (hanh chinh)) cua khong cong ((tan toan) OR (van toan)) cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chi xanh - ((hanh trinh) OR (hanh chinh)) cua khong cong ((tan toan) OR (van toan)) cao*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi chi xanh - ((hanh trinh) or (hanh chinh)) cua khong cong ((tan toan) OR (van toan)) cao*".