Perhaps you should try some spelling variations:
hanh vai » hanh vi, hanh tai, hanh van
bo sach » co sach, hoc sach
hieu ve » hieu va, hieu van
hanh va » hang va, hanh vi
cua tre » cua te, cuu tre, cua triet
ang xa » lang xa, mang xa, dang xay
ve cac » va cac, vien cac
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: bo sach y ang xa hoi. hieu ve cac ((xuc va) or (tuc xa)) ((hanh vai) or (hanh va)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: bo sach y ang xa hoi. hieu ve cac ((xuc va) OR (tuc xa)) ((hanh vai) OR (hanh va)) cua tre.
• Adding a wildcard symbol may retrieve word variants: bo sach y ang xa hoi. hieu ve cac ((xuc va) or (tuc xa)) ((hanh vai) or (hanh va)) cua tre*.