Perhaps you should try some spelling variations:
chieu xanh » chieu sang, chieu tinh, hieu manh
chieu sach » chinh sach, chiet tach, chieu sang
nhung dung » phuong dung, ung dung, thong dung
nhung cong » dung cong, thong cong, hang cong
lanh manh » lanh tranh, lan anh, van manh
manh cua » doanh cua, ban cua
van toan » van tuan, van tan, van thanh
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: hoc ((chieu xanh) OR (chieu sach)) - lanh manh cua ((nhung dung) or (nhung cong)) van toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((chieu xanh) OR (chieu sach)) - lanh manh cua ((nhung dung) OR (nhung cong)) van toan tap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((chieu xanh) OR (chieu sach)) - lanh manh cua ((nhung dung) or (nhung cong)) van toan tap".
• Adding a wildcard symbol may retrieve word variants: hoc ((chieu xanh) OR (chieu sach)) - lanh manh cua ((nhung dung) or (nhung cong)) van toan tap*.