Perhaps you should try some spelling variations:
toc sach » hoc sach, doc sach, thuoc sach
hieu cua » hieu qua, dieu cua, bieu cua
hanh vai » hanh vi, hanh tai, hanh van
ve triet » va trien, su triet
nang ma » tang ma, sang ma, nang cao
cac xuc » cam xuc, cac nuoc, chat xuc
xuc van » duc van, luc van, vuc van
hanh va » hang va, hanh vi
y nang » ky nang, ly nang, v nang
ma hoi » mai hoi, xa hoi, ma hoa

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "toc sach y nang ma hoi. hieu cua cac xuc van ((hanh vai) OR (hanh va)) ve triet~".
• Adding a wildcard symbol may retrieve word variants: toc sach y nang ma hoi. hieu cua cac xuc van ((hanh vai) OR (hanh va)) ve triet*.