Perhaps you should try some spelling variations:
thieu nien » thien nhien
nien cap » nien lap, vien cac, vien cao
cap nuoc » dat nuoc
va thanh » gia thanh, ban thanh, le thanh
va tinh » may tinh
sach ky » sac ky, sach ty, sach kem
lang xa » lang ha, dang xay, lang van
cua tre » cua te, cuu tre, cua triet
va cua » va chua, via cua, ca cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: vu ((sach ky) OR (sach y)) lang xa hoi. thieu nien cap nuoc ((va thanh) or (va tinh)) va cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu ((sach ky) OR (sach y)) lang xa hoi. thieu nien cap nuoc ((va thanh) OR (va tinh)) va cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu ((sach ky) OR (sach y)) lang xa hoi. thieu nien cap nuoc ((va thanh) or (va tinh)) va cua tre".
• Adding a wildcard symbol may retrieve word variants: vu ((sach ky) OR (sach y)) lang xa hoi. thieu nien cap nuoc ((va thanh) or (va tinh)) va cua tre*.