Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
hanh trinh » canh tranh, hanh chinh
thong cong » trong cong, tong cong, thong thong
tieu xanh » tieu danh, dieu hanh, tien anh
trinh va » trinh van, trinh vat, trinh ve
va thong » va thuong, va phuong, he thong
cong tap » cuong tap, cong tac, cong tan
doan cao » doanh cao, toan cao, hoang cao
doan cap » doanh cao, dan ca, toan cao

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: theo ((tieu xanh) OR (chieu xanh)) - hanh trinh va thong cong tap ((doan cao) OR (doan cap))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((tieu xanh) or (chieu xanh)) - hanh trinh va thong cong tap ((doan cao) OR (doan cap))~".
• Adding a wildcard symbol may retrieve word variants: theo ((tieu xanh) or (chieu xanh)) - hanh trinh va thong cong tap ((doan cao) OR (doan cap))*.