Perhaps you should try some spelling variations:
chieu sang » chieu xanh, hieu lang, nhieu tang
chieu sach » chinh sach, chiet tach, chieu xanh
hanh trinh » canh tranh, hanh chinh
hanh tinh » nhanh tinh, thanh tinh, canh tinh
dang cong » dung cong
cua dang » cua cong, cua ban
cong tac » cong ty
tac hang » tac vang, bac thang, tac chong
hang dau » hang va, hang 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 sang) or (chieu sach)) - ((hanh tinh) OR (hanh trinh)) cua dang cong tac hang dau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chieu sang) OR (chieu sach)) - ((hanh tinh) OR (hanh trinh)) cua dang cong tac hang dau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((chieu sang) or (chieu sach)) - ((hanh tinh) OR (hanh trinh)) cua dang cong tac hang dau".
• Adding a wildcard symbol may retrieve word variants: ho ((chieu sang) or (chieu sach)) - ((hanh tinh) OR (hanh trinh)) cua dang cong tac hang dau*.