Perhaps you should try some spelling variations:
thanh dat » thanh san, thanh hai, thanh van
thu sach » tu sach, thuat sach, thuoc sach
va cham » va chat, va tham
dat cua » dai cua, day cua, mat cua
cua tre » cua te, cuu tre, cua triet
y nang » ky nang, ly nang, v nang
goc va » hoc va, uoc va
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: thu sach y nang x hoi. lieu va cham ((((goc va) or (doc va))) or (loc va)) thanh dat cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach y nang x hoi. lieu va cham ((((goc va) OR (doc va))) OR (loc va)) thanh dat cua tre.
• Adding a wildcard symbol may retrieve word variants: thu sach y nang x hoi. lieu va cham ((((goc va) or (doc va))) or (loc va)) thanh dat cua tre*.