Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
canh trinh » canh tranh, canh tinh, anh trinh
hanh trinh » canh tranh, hanh chinh
dung huong » dung thuong, dung phuong, dong huong
doi chieu » doc hieu, doi chi, ho chieu
van dung » van dong, xay dung, tin dung
dan toan » van toan, dan than, manh toan
toan cau » 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 chieu xanh - ((canh trinh) or (hanh trinh)) van dung huong dan toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu xanh - ((canh trinh) OR (hanh trinh)) van dung huong dan toan cau.
• Adding a wildcard symbol may retrieve word variants: doi chieu xanh - ((canh trinh) or (hanh trinh)) van dung huong dan toan cau*.