Perhaps you should try some spelling variations:
nuoc sach » nguoi sach, cuoc cach, cuon sach
hoc sach » hoc sinh, hoc cac, hoc anh
tinh vai » tinh va, tinh hai, tinh bai
va cham » va chat, va tham
vai cua » dai cua, hai cua, lai cua
va tinh » may tinh
cua tre » cua te, cuu tre, cua triet
nang xa » nang x, lang xa, nang ma
va nang » van nang, da nang, cam nang
va cam » va cac, va cao, va cai
luc va » duc va, tuc va, loc 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 (nuoc sach)) va nang xa hoi. lieu ((va cam) OR (va cham)) luc va tinh vai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc sach) OR (nuoc sach)) va nang xa hoi. lieu ((va cam) OR (va cham)) luc va tinh vai cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((hoc sach) or (nuoc sach)) va nang xa hoi. lieu ((va cam) OR (va cham)) luc va tinh vai cua tre".
• Adding a wildcard symbol may retrieve word variants: ((hoc sach) or (nuoc sach)) va nang xa hoi. lieu ((va cam) OR (va cham)) luc va tinh vai cua tre*.