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
van nang » van quang, van ban, van dong
tu sach » thu sach, su sach, te sach
tuc va » thuc va, truc va, duc va
v nang » va nang, vu nang, voi nang
dai ve » dap ve, dau ve, dai va
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: tu sach ((v nang) OR (van nang)) x 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) OR (van nang)) x 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) OR (van nang)) x hoi. thien van chat ((tuc va) or (tuc xa)) vanh dai ve triet*.