Perhaps you should try some spelling variations:
chieu sang » chieu sach, chieu xanh, hieu lang
hanh trinh » hanh chinh
dong doanh » dung doanh, trong doanh, doanh doanh
hoc chieu » hoc thieu, ho chieu, hoc hien
dung dong » dung cong, vung dong, dung trong
doanh van » doan van, doanh va, doanh ban
cua dung » cua dang, cua dong, qua dung

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc chieu sang - ((hanh trinh) or (canh tranh)) cua dung dong doanh van ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc chieu sang - ((hanh trinh) OR (canh tranh)) cua dung dong doanh van ban*.