Perhaps you should try some spelling variations:
cuon sach » duong sach, cuoc cach, nuoc sach
dia thanh » gia thanh, da thanh, dinh thanh
su triet » su viet, su tien, ve triet
thuc dia » thuc dieu, thuat dia, thuc giai
thanh vi » hanh vi, thanh va, thanh ve
anh thuc » am thuc, dan thuc, anh tu
hieu va » lieu va, hieu qua
nang xa » nang x, lang xa, nang ma
cua tre » cua te, cuu tre, cua triet
co sach » bo sach, hoc sach
va anh » van anh, va danh, va hanh
y nang » ky nang, ly nang, v nang

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((co sach) OR (cuon sach)) y nang xa hoi. hieu va anh thuc dia thanh vi ((cua tre) or (su triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((co sach) OR (cuon sach)) y nang xa hoi. hieu va anh thuc dia thanh vi ((cua tre) OR (su triet))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((co sach) OR (cuon sach)) y nang xa hoi. hieu va anh thuc dia thanh vi ((cua tre) or (su triet))*".