Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
hanh trung » thanh trung, hanh trang, manh trung
hanh trinh » canh tranh, hanh chinh
dung cong » dung trong
thanh cau » thanh chau, nhanh cau, thanh ca
thanh mau » hanh mau, thanh san, thanh hai
ho chieu » theo chieu, hoc thieu, doi chieu
vat dung » van dung, va dung, viet dung
cong ban » cong bang, cong san, cong tan

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 (hanh trinh)) vat dung cong ban ((thanh cau) OR (thanh mau))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sach - ((hanh trung) OR (hanh trinh)) vat dung cong ban ((thanh cau) OR (thanh mau)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu sach - ((hanh trung) or (hanh trinh)) vat dung cong ban ((thanh cau) OR (thanh mau))".
• Adding a wildcard symbol may retrieve word variants: ho chieu sach - ((hanh trung) or (hanh trinh)) vat dung cong ban ((thanh cau) OR (thanh mau))*.