Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
hieu van » hieu va, thien van, lieu va
ve triet » va trien, su triet
van cau » van dau, van hau, van chat
y nang » ky nang, ly nang, v nang
xuc va » duc va, tuc va, xac va
luc va » duc va, tuc va, loc va
x hoi » xa hoi, o hoi, x ho
vi ve » va ve, gi ve, ve ve

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: "thu sach y nang x hoi. hieu van cau ((xuc va) OR (luc va)) hanh vi ve triet~".
• Adding a wildcard symbol may retrieve word variants: thu sach y nang x hoi. hieu van cau ((xuc va) OR (luc va)) hanh vi ve triet*.