Perhaps you should try some spelling variations:
nuoc sach » nguoi sach, cuoc cach, cuon sach
hoc sach » hoc sinh, hoc anh
dung sai » dung tai, dung va, dung dat
sai cua » dai cua, hai cua, lai cua
va dung » van dung, va duong, vat dung
hieu va » lieu va, hieu qua
lang xa » lang ha, dang xay, lang van
ky lang » ky nang, ky dang, ky tang
hoc cac » hoc cao
cua tre » cua te, cuu tre, cua triet
va cam » va cham, va cac, va cao
xuc va » duc va, tuc va, luc va

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((((hoc sach) or (hoc cac))) or (nuoc sach)) ky lang xa hoi. hieu va cam xuc va dung sai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((((hoc sach) OR (hoc cac))) OR (nuoc sach)) ky lang xa hoi. hieu va cam xuc va dung sai cua tre.
• Adding a wildcard symbol may retrieve word variants: ((((hoc sach) or (hoc cac))) or (nuoc sach)) ky lang xa hoi. hieu va cam xuc va dung sai cua tre*.