Perhaps you should try some spelling variations:
thieu nien » thien nhien
nien cay » trien cay, vien cac, vien cao
thuc dan » thuc hanh, hoc dan, thuc vat
vu sach » vu bach, su sach, vu khach
sach ty » sach y, sach tu, sach thu
xang xa » lang xa, mang xa, ang xa
thuc va » thuc vat, thuc day
cua tre » cua te, cuu tre, cua triet
vi cua » vai cua, di 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 ty xang xa hoi. thieu nien cay ((thuc va) OR (thuc dan)) hanh vi cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu sach ty xang xa hoi. thieu nien cay ((thuc va) OR (thuc dan)) hanh vi cua tre".
• Adding a wildcard symbol may retrieve word variants: vu sach ty xang xa hoi. thieu nien cay ((thuc va) OR (thuc dan)) hanh vi cua tre*.