Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
manh trung » manh tung, thanh trung, sinh trung
nhung cong » dung cong, thong cong, hang cong
hoc chieu » hoc thieu, ho chieu, hoc hien
manh hung » anh huong
dang cong » dung cong
van toan » van tuan, van tan, van thanh
toan ban » van 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 sach - ((manh trung) OR (manh hung)) cua ((nhung cong) or (dang cong)) van toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc chieu sach - ((manh trung) OR (manh hung)) cua ((nhung cong) OR (dang cong)) van toan ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc chieu sach - ((manh trung) OR (manh hung)) cua ((nhung cong) or (dang cong)) van toan ban".
• Adding a wildcard symbol may retrieve word variants: hoc chieu sach - ((manh trung) OR (manh hung)) cua ((nhung cong) or (dang cong)) van toan ban*.