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

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: te sach ky ((nang x) OR (nang ma)) hoi. hieu ve cac xuc va danh vi ((cuu tre) OR (cua tre))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ky ((nang x) or (nang ma)) hoi. hieu ve cac xuc va danh vi ((cuu tre) OR (cua tre))~".
• Adding a wildcard symbol may retrieve word variants: te sach ky ((nang x) or (nang ma)) hoi. hieu ve cac xuc va danh vi ((cuu tre) OR (cua tre))*.