Perhaps you should try some spelling variations:
cua triet » cua viet, su triet
thien van » thi van
thu sach » tu sach, thuat sach, thuoc sach
hanh dao » lanh dao, thanh dat, thanh dam
va triet » va thiet, va trien, ve triet
van dau » van dao, phan dau
luc va » duc va, loc va
y nang » ky nang, ly nang, v nang
tuc va » thuc va, truc va, tuc xa
x hoi » xa hoi, o hoi, x ho

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: thu sach y nang x hoi. thien van dau ((luc va) OR (tuc va)) hanh dao ((cua triet) OR (va triet))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sach y nang x hoi. thien van dau ((luc va) or (tuc va)) hanh dao ((cua triet) OR (va triet))~".
• Adding a wildcard symbol may retrieve word variants: thu sach y nang x hoi. thien van dau ((luc va) or (tuc va)) hanh dao ((cua triet) OR (va triet))*.