Perhaps you should try some spelling variations:
chieu xanh » chieu sang, chieu tinh, hieu manh
chieu sach » chinh sach, chiet tach, chieu sang
lanh manh » lanh tranh, lan anh, van manh
cong toan » cong hoan, cong tuan, cong doan
manh cua » doanh cua, ban cua
cong tan » cong tac, cong san, cong thanh
phan dau » phan tu, hang dau

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 xanh) or (chieu sach)) - lanh manh cua ban ((cong toan) OR (cong tan)) phan dau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chieu xanh) OR (chieu sach)) - lanh manh cua ban ((cong toan) OR (cong tan)) phan dau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((chieu xanh) or (chieu sach)) - lanh manh cua ban ((cong toan) OR (cong tan)) phan dau".
• Adding a wildcard symbol may retrieve word variants: ho ((chieu xanh) or (chieu sach)) - lanh manh cua ban ((cong toan) OR (cong tan)) phan dau*.