Perhaps you should try some spelling variations:
thien van » thi van
cua triet » cua viet, su triet, va triet
vanh dai » van dai, lanh dao, van dao
vanh tai » van tai, hanh tai, anh tai
tu sach » thu sach, su sach, te sach
nang xa » nang x, lang xa, nang ma
van dau » van dao, phan dau
y nang » ky nang, ly nang, v nang
tuc va » thuc va, truc va, tuc xa

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