Perhaps you should try some spelling variations:
thanh lam » thanh lap, hanh lam, thanh nam
cua triet » cua viet, su triet, va triet
hieu van » hieu va, thien van, lieu va
vu sach » vu bach, su sach, vu khach
van cau » van dau, van hau, van chat
lam cua » nam cua, lam chat
y nang » ky nang, ly nang, v nang
nang o » nang co, nang ho, nang ro
xuc va » tuc va, luc va, xac va
o hoc » co hoc, mo hoc, so hoc

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: vu sach y nang o hoc. hieu van cau ((xuc va) or (duc va)) thanh lam cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach y nang o hoc. hieu van cau ((xuc va) OR (duc va)) thanh lam cua triet.
• Adding a wildcard symbol may retrieve word variants: vu sach y nang o hoc. hieu van cau ((xuc va) or (duc va)) thanh lam cua triet*.