Perhaps you should try some spelling variations:
chieu sang » chieu sach, hieu lang, nhieu tang
chieu xanh » chieu sach, chieu tinh, hieu manh
hanh trinh » hanh chinh
nhung cong » dung cong, thong cong, hang cong
cua nhung » va nhung
cong manh » cong danh, duong manh, cong thanh
manh toan » thanh toan, anh tuan, tinh toan
toan ban » van ban

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 ((chieu sang) OR (chieu xanh)) - ((hanh trinh) OR (canh tranh)) cua nhung cong manh toan ban~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((chieu sang) or (chieu xanh)) - ((hanh trinh) OR (canh tranh)) cua nhung cong manh toan ban~".
• Adding a wildcard symbol may retrieve word variants: theo ((chieu sang) or (chieu xanh)) - ((hanh trinh) OR (canh tranh)) cua nhung cong manh toan ban*.