Perhaps you should try some spelling variations:
hanh vai » hanh vi, hanh va, hanh tai
sach thu » sach thue, sach thieu, sach tham
sach tu » cach tu, sach ty, sach uu
vai cua » dai cua, hai cua, lai cua
cua tre » cua te, cuu tre, cua triet
hieu va » lieu va, hieu qua
tang xa » trang xa, tang ma, lang xa
xuc va » duc va, tuc va, xac va
luc va » duc va, tuc va, loc va
va cam » va cham, va cac, va cao

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

• Performing a fuzzy search may retrieve terms with similar spellings: te ((sach tu) or (sach thu)) tang xa hoi. hieu va cam ((xuc va) OR (luc va)) hanh vai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te ((sach tu) OR (sach thu)) tang xa hoi. hieu va cam ((xuc va) OR (luc va)) hanh vai cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te ((sach tu) or (sach thu)) tang xa hoi. hieu va cam ((xuc va) OR (luc va)) hanh vai cua tre".
• Adding a wildcard symbol may retrieve word variants: te ((sach tu) or (sach thu)) tang xa hoi. hieu va cam ((xuc va) OR (luc va)) hanh vai cua tre*.