Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
hanh trinh » hanh chinh
thong cong » trong cong, tong cong, thong thong
doi chieu » doc hieu, doi chi, ho chieu
vat thong » va thong, vat trong, mat thong
cong van » cong vang, cong san, song van
than cap » thanh lap, thanh cac, than cua
khan cap » khan ap, khoan cam, phan cac

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

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