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
dung cong » dung trong
cua dung » cua dang, cua dong, qua dung
cong dan » cong san, cong tan, huong dan
dan toan » van toan, dan than, manh toan
toan tap » toan ban

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

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