Perhaps you should try some spelling variations:
thieu nien » thien nhien
thanh hai » thanh phan, thanh hoa, thanh san
nien cac » vien cac, dien cac, bien cac
cac thuc » cach thuc, cac thu, can thuc
va thanh » gia thanh, ban thanh, va tinh
cau theo » cau thi, cau tao
tu sach » thu sach, su sach, te sach
sach ty » sach y, sach tu, sach thu
ty nang » ky nang, ty xang, ty hang
nang xa » nang x, lang xa, nang ma
thuc va » thuc vat, thuc dan, thuc day
cua tre » cua te, cuu tre, cua triet

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 ty nang xa hoi. thieu nien cac thuc va thanh hai ((cua tre) or (cau theo))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ty nang xa hoi. thieu nien cac thuc va thanh hai ((cua tre) OR (cau theo)).
• Adding a wildcard symbol may retrieve word variants: tu sach ty nang xa hoi. thieu nien cac thuc va thanh hai ((cua tre) or (cau theo))*.