Perhaps you should try some spelling variations:
thanh dat » thanh san, thanh hai, thanh van
cua triet » cua viet, va triet
toc sach » hoc sach, doc sach, thuoc sach
cac quoc » cac nuoc, cac cuoc, cao quoc
su triet » su viet, su tien, ve triet
nang xa » nang x, lang xa, nang ma
y nang » ky nang, ly nang, v nang
cua te » cua tu
gia » giao

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: toc sach y nang xa hoi. lieu va cac quoc gia thanh dat ((cua te) OR (((cua triet) OR (su triet))))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc sach y nang xa hoi. lieu va cac quoc gia thanh dat ((cua te) or (((cua triet) OR (su triet))))~".
• Adding a wildcard symbol may retrieve word variants: toc sach y nang xa hoi. lieu va cac quoc gia thanh dat ((cua te) or (((cua triet) OR (su triet))))*.