Perhaps you should try some spelling variations:
thuoc sach » hoc sach, nuoc sach, thuat sach
thanh doi » thanh loi, thanh moi, thanh do
van chat » cao chat
chat tuc » chat xuc, luat tuc, chat huu
hieu van » hieu va, thien van, lieu va
va thanh » gia thanh, ban thanh, va tinh
cua tre » cuu tre, cua triet, dua tren
tu sach » thu sach, su sach, te sach
nang xa » nang x, lang xa, nang ma
tuc va » thuc va, truc va, tuc xa
y nang » ky nang, ly nang, v nang
cua te » cua tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((tu sach) or (thuoc sach)) y nang xa hoi. hieu van chat tuc va thanh doi ((cua tre) or (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (thuoc sach)) y nang xa hoi. hieu van chat tuc va thanh doi ((cua tre) OR (cua te)).
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (thuoc sach)) y nang xa hoi. hieu van chat tuc va thanh doi ((cua tre) or (cua te))*.