Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
cua triet » cua viet, su triet, va triet
va cham » va chat, va tham
hanh de » hanh ve, hanh kem
cua tre » cua te, cuu tre, dua tren
y nang » ky nang, ly nang, v nang
doc va » duoc va, hoc va, duc va
loc va » hoc va, luc va
x hoi » xa hoi, o hoi, x ho

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

• Performing a fuzzy search may retrieve terms with similar spellings: thuat sach y nang x hoi. lieu va cham ((doc va) or (loc va)) hanh de ((cua tre) or (cua triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuat sach y nang x hoi. lieu va cham ((doc va) OR (loc va)) hanh de ((cua tre) OR (cua triet)).
• Adding a wildcard symbol may retrieve word variants: thuat sach y nang x hoi. lieu va cham ((doc va) or (loc va)) hanh de ((cua tre) or (cua triet))*.