Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
hanh mang » nhanh mang, hanh trang, nhanh lang
tong cong » trong cong, cong cong, dung cong
cong vang » cong lang, cong quang, cong ngang
ho chieu » theo chieu, hoc thieu, doi chieu
toan cao » toan tap
toan ban » van ban
mang va » mang vua, hang va, bang va
va tong » va thong, va tuong, va trong

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 mang va tong cong vang ((toan cao) or (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sach - hanh mang va tong cong vang ((toan cao) OR (toan ban)).
• Adding a wildcard symbol may retrieve word variants: ho chieu sach - hanh mang va tong cong vang ((toan cao) or (toan ban))*.