Perhaps you should try some spelling variations:
sach ky » sac ky, sach y, sach kem
danh vi » hanh vi, dinh vi, danh di
va danh » va dinh, va dan, va hanh
cac xuc » cam xuc, cac nuoc, chat xuc
hieu ve » hieu va, hieu van
cua tre » cua te, cuu tre, cua triet
nang ma » tang ma, sang ma, nang cao
sach ty » sach y, sach tu, sach thu
ve cac » va cac, vien cac
xuc va » duc va, tuc va, luc va
vi cua » vai cua, di cua

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

• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach ky) OR (sach ty)) ((nang x) OR (nang ma)) hoi. hieu ve cac xuc va danh vi cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((sach ky) OR (sach ty)) ((nang x) or (nang ma)) hoi. hieu ve cac xuc va danh vi cua tre~".
• Adding a wildcard symbol may retrieve word variants: tu ((sach ky) OR (sach ty)) ((nang x) or (nang ma)) hoi. hieu ve cac xuc va danh vi cua tre*.