Perhaps you should try some spelling variations:
thien van » thi van
ve triet » va trien, su triet
vanh dai » van dai, vanh tai, lanh dao
van chat » cao chat
tu sach » thu sach, su sach, te sach
sach v » sach va, sach y, sach 2
tuc va » thuc va, truc va, duc va
v nang » va nang, vu nang, van nang
dai ve » dap ve, dau ve, dai va
o hoi » co hoi, o hoc, o hai
x hoi » xa hoi, x ho, 5 hoi

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 v nang ((x hoi) OR (o hoi)). thien van chat ((tuc va) OR (tuc xa)) vanh dai ve triet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach v nang ((x hoi) OR (o hoi)). thien van chat ((tuc va) or (tuc xa)) vanh dai ve triet~".
• Adding a wildcard symbol may retrieve word variants: tu sach v nang ((x hoi) OR (o hoi)). thien van chat ((tuc va) or (tuc xa)) vanh dai ve triet*.