Perhaps you should try some spelling variations:
chieu sang » chieu sach, chieu xanh, hieu lang
hanh tranh » canh tranh, hanh trang, lanh tranh
hanh trinh » canh tranh, hanh chinh
doi chieu » doc hieu, doi chi, ho chieu
dung cong » dung trong
cua dung » cua dang, cua dong, qua dung
cong tac » cong ty
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: doi chieu sang - ((hanh tranh) OR (hanh trinh)) cua dung cong tac ((van ban) or (toan tap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu sang - ((hanh tranh) OR (hanh trinh)) cua dung cong tac ((van ban) OR (toan tap))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi chieu sang - ((hanh tranh) OR (hanh trinh)) cua dung cong tac ((van ban) or (toan tap))*".