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

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

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