Perhaps you should try some spelling variations:
thieu nien » thien nhien
thu sach » tu sach, thuat sach, thuoc sach
nien cac » vien cac, dien cac, bien cac
lang hoi » lang hai, quang hoi, lang chai
su sach » so sach, vu sach
ky lang » ky nang, ky dang, ky tang
lang xa » lang ha, dang xay, lang van
cac lao » ca lao, cac loai, cac giao
va lang » va nang, hoa lang
hoi cua » hoi chuc
cua tre » cua te, cuu tre, cua triet
lao va » tao va, cao va, bao va

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((thu sach) or (su sach)) ky lang xa hoi. thieu nien cac lao va lang hoi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thu sach) OR (su sach)) ky lang xa hoi. thieu nien cac lao va lang hoi cua tre.
• Adding a wildcard symbol may retrieve word variants: ((thu sach) or (su sach)) ky lang xa hoi. thieu nien cac lao va lang hoi cua tre*.