Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
hanh trung » thanh trung, hanh trang, danh trung
manh trung » manh tung, thanh trung, manh hung
dung cong » dung trong
ho chieu » theo chieu, hoc thieu, doi chieu
cong anh » cong danh, dong anh, hong anh
tuan cau » toan cau, quan cau, tuan cu
va dung » van dung, va duong, vat dung

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 sach - ((hanh trung) or (manh trung)) va dung cong anh tuan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sach - ((hanh trung) OR (manh trung)) va dung cong anh tuan cau*.