Perhaps you should try some spelling variations:
thuoc sach » hoc sach, nuoc sach, thuat sach
hanh dai » hanh tai, hanh dao, vanh dai
toc sach » hoc sach, doc sach, nuoc sach
va hanh » van hanh, va thanh, va danh
cac tuc » cac toc, cac tu, cac tac
hieu ve » hieu va, hieu van
dang xa » dang xay, lang xa, dang ha
ky dang » ky nang, ky danh
cua tre » cua te, cuu tre, cua triet
ve cac » va cac, vien cac
tuc va » thuc va, truc va, tuc xa

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: ((((te sach) OR (toc sach))) OR (thuoc sach)) ky dang xa hoi. hieu ve cac tuc va hanh dai cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((te sach) OR (toc sach))) or (thuoc sach)) ky dang xa hoi. hieu ve cac tuc va hanh dai cua tre~".
• Adding a wildcard symbol may retrieve word variants: ((((te sach) OR (toc sach))) or (thuoc sach)) ky dang xa hoi. hieu ve cac tuc va hanh dai cua tre*.