Perhaps you should try some spelling variations:
hanh vai » hanh vi, hanh va, hanh tai
sach doi » sach hoi, sach moi, sach dao
vai cua » dai cua, hai cua, lai cua
va cham » va chat, va tham
sach lo » sach dao, sach hoi, sach moi
hieu va » lieu va, hieu qua
nang xa » nang x, lang xa, nang ma
cua tre » cua te, cuu tre, cua triet
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: vu ((sach lo) OR (sach doi)) nang xa hoi. hieu va cham ((luc va) or (tuc xa)) hanh vai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu ((sach lo) OR (sach doi)) nang xa hoi. hieu va cham ((luc va) OR (tuc xa)) hanh vai cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu ((sach lo) OR (sach doi)) nang xa hoi. hieu va cham ((luc va) or (tuc xa)) hanh vai cua tre".
• Adding a wildcard symbol may retrieve word variants: vu ((sach lo) OR (sach doi)) nang xa hoi. hieu va cham ((luc va) or (tuc xa)) hanh vai cua tre*.