Perhaps you should try some spelling variations:
toc sach » hoc sach, doc sach, thuoc sach
thu sach » tu sach, thuat sach, thuoc sach
qua cham » qua hai, qua cac, va cham
cham tuc » nham thuc, pham thuc, tham thuc
va tinh » may tinh
tinh do » trinh do, tinh doi, tinh da
cua tre » cua te, cuu tre, cua triet
y nang » ky nang, ly nang, v nang
tuc va » thuc va, truc va, tuc xa
do cua » doi cua, co cua, de cua
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: ((((te sach) or (toc sach))) or (thu sach)) y nang x hoi. hieu qua cham tuc va tinh do cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((((te sach) OR (toc sach))) OR (thu sach)) y nang x hoi. hieu qua cham tuc va tinh do cua tre.
• Adding a wildcard symbol may retrieve word variants: ((((te sach) or (toc sach))) or (thu sach)) y nang x hoi. hieu qua cham tuc va tinh do cua tre*.