Perhaps you should try some spelling variations:
ve triet » va trien, su triet
thanh vi » thanh va, thanh ve, nhanh vi
hieu van » hieu va, thien van, lieu va
tu sach » thu sach, su sach, te sach
van hau » van ha, van hai, van dau
xuc va » duc va, tuc va, xac va
y nang » ky nang, ly nang, v nang
luc va » duc va, tuc va, loc va
nang o » nang co, nang ho, nang ro
o hoi » co hoi, o hoc, o hai

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: tu sach y nang o hoi. hieu van hau ((xuc va) OR (luc va)) ((thanh vi) OR (hanh vi)) ve triet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach y nang o hoi. hieu van hau ((xuc va) OR (luc va)) ((thanh vi) or (hanh vi)) ve triet~".
• Adding a wildcard symbol may retrieve word variants: tu sach y nang o hoi. hieu van hau ((xuc va) OR (luc va)) ((thanh vi) or (hanh vi)) ve triet*.