Perhaps you should try some spelling variations:
su sach » so sach, vu sach
danh xa » danh ca, dinh xa, canh xa
hieu va » lieu va, hieu qua
cuc ban » cua ban, cac ban, cuu ban
can ban » van ban, toan ban
tinh vi » trinh vi, tinh voi, tinh va
cua tre » cua te, cuu tre, cua triet
sach 2 » sach y
2 danh » 1 danh
va cao » va cac, va co, va dao
vi cua » vai cua, di cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sach 2 danh xa hoi. hieu va cao ((cuc ban) or (can ban)) tinh vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach 2 danh xa hoi. hieu va cao ((cuc ban) OR (can ban)) tinh vi cua tre.
• Adding a wildcard symbol may retrieve word variants: su sach 2 danh xa hoi. hieu va cao ((cuc ban) or (can ban)) tinh vi cua tre*.