Perhaps you should try some spelling variations:
dinh vai » dinh van, dinh vi, dinh va
sach ty » sach tu, sach thu, xach tay
vai cua » dai cua, hai cua, lai cua
va dinh » van dinh, va kinh, va tinh
cac xuc » cam xuc, cac nuoc, chat xuc
qua cac » cua cac
cua tre » cua te, cuu tre, cua triet
nang ma » tang ma, sang ma, nang cao
nang xa » nang x, lang xa, mang xa
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: vu ((sach ty) OR (sach y)) ((nang xa) or (nang ma)) hoi. hieu qua cac xuc va dinh vai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu ((sach ty) OR (sach y)) ((nang xa) OR (nang ma)) hoi. hieu qua cac xuc va dinh vai cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu ((sach ty) OR (sach y)) ((nang xa) or (nang ma)) hoi. hieu qua cac xuc va dinh vai cua tre*".