Perhaps you should try some spelling variations:
chieu sach » chiet tach, chieu sang, chieu xanh
nhanh mang » nhanh lang, hanh mang, nhanh quang
vat dung » van dung, viet dung, mat duong
cong san » cong tac
san tran » tan tran, ban tran, dang tran
tran cau » tran chau, toan cau, ran cau
va dung » van dung, va duong, va ung

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: theo ((chieu sach) or (chinh sach)) - nhanh mang ((va dung) OR (vat dung)) cong san tran cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chieu sach) OR (chinh sach)) - nhanh mang ((va dung) OR (vat dung)) cong san tran cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((chieu sach) or (chinh sach)) - nhanh mang ((va dung) OR (vat dung)) cong san tran cau".
• Adding a wildcard symbol may retrieve word variants: theo ((chieu sach) or (chinh sach)) - nhanh mang ((va dung) OR (vat dung)) cong san tran cau*.