Perhaps you should try some spelling variations:
hoc sach » hoc sinh, hoc cac, hoc anh
sach ty » sach y, sach tu, sach thu
hanh va » hang va
xuc ban » duc ban, cuc ban, quoc ban
cua tre » cua te, cuu tre, cua triet
ty hang » ly hang, ty xang, thi hang
ve cam » ve cham, ve cac, ve cai
va cam » va cham, va cac, va cao
hang x » nang x, hoang xa, chang xu

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 ty hang x ho. hieu ((ve cam) or (va cam)) xuc ban ((hanh vi) or (hanh va)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc sach ty hang x ho. hieu ((ve cam) OR (va cam)) xuc ban ((hanh vi) OR (hanh va)) cua tre.
• Adding a wildcard symbol may retrieve word variants: hoc sach ty hang x ho. hieu ((ve cam) or (va cam)) xuc ban ((hanh vi) or (hanh va)) cua tre*.