Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu tinh, hieu manh
chieu sang » chieu sach, nhieu tang
hanh trinh » canh tranh, hanh chinh
hieu lang » hieu quang, nhieu tang, hieu van
trinh cua » tinh cua, trinh luat, trinh quan
trong dan » trong dang, trong san, trong tan
cua dung » cua dang, cua dong, qua 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.

• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chieu xanh) OR (((chieu sang) OR (hieu lang)))) - hanh trinh cua dung trong dan toan cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((chieu xanh) or (((chieu sang) OR (hieu lang)))) - hanh trinh cua dung trong dan toan cau~".
• Adding a wildcard symbol may retrieve word variants: ho ((chieu xanh) or (((chieu sang) OR (hieu lang)))) - hanh trinh cua dung trong dan toan cau*.