Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
hanh tranh » canh tranh, hanh trang, lanh tranh
hanh trinh » canh tranh, hanh chinh
phan cong » thanh cong
ho chieu » theo chieu, hoc thieu, doi chieu
san toan » van toan, dan toan, manh toan
toan cao » toan ban, toan tap

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 tranh) or (hanh trinh)) cua ((phan cong) or (van dong)) san toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sach - ((hanh tranh) OR (hanh trinh)) cua ((phan cong) OR (van dong)) san toan cao.
• Adding a wildcard symbol may retrieve word variants: ho chieu sach - ((hanh tranh) or (hanh trinh)) cua ((phan cong) or (van dong)) san toan cao*.