Perhaps you should try some spelling variations:
te sach » toc sach
sach ky » sac ky, sach y, sach ty
hieu ve » hieu va, hieu van
cac xuc » cam xuc, cac nuoc, chat xuc
dinh vi » dinh viet, dinh tri, dinh thi
dinh ve » dinh ket, dinh van
luy tre » luyen tre
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.

• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky ((nang x) OR (nang cao)) hoi. hieu ve cac xuc va ((dinh vi) OR (dinh ve)) luy tre~.
• Adding a wildcard symbol may retrieve word variants: te sach ky ((nang x) or (nang cao)) hoi. hieu ve cac xuc va ((dinh vi) or (dinh ve)) luy tre*.