Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
trong dang » truong dang, trong dong, trong dung
hanh mang » nhanh mang, hanh trang, nhanh lang
trong dan » trong san, trong tan, trong ban
cau sach » cao sach, hau sach, rau sach
mang cua » manh cua, dung cua, ban cua
toan cao » toan ban, toan tap
cua bai » cua ban, cua dai, cua bac

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo ((cau sach) or (chieu sach)) - hanh mang cua bai ((trong dan) OR (trong dang)) toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((cau sach) OR (chieu sach)) - hanh mang cua bai ((trong dan) OR (trong dang)) toan cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((cau sach) or (chieu sach)) - hanh mang cua bai ((trong dan) OR (trong dang)) toan cao".
• Adding a wildcard symbol may retrieve word variants: theo ((cau sach) or (chieu sach)) - hanh mang cua bai ((trong dan) OR (trong dang)) toan cao*.