Perhaps you should try some spelling variations:
thieu nien » thien nhien
thuat sach » thuat lanh, thuat san
danh vi » hanh vi, dinh vi, danh di
truc va » thuc va, thuc vat, trung va
sach ty » sach y, sach tu, sach thu
nien ca » nien cua, bien ca, dien ca
mang xa » lang xa, mang may, dang xay
tuc va » thuc va, tuc xa, duc va
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: thuat sach ty ((mang xa) or (nang x)) hoi. thieu nien ca ((tuc va) or (truc va)) danh vi cua vat~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuat sach ty ((mang xa) OR (nang x)) hoi. thieu nien ca ((tuc va) OR (truc va)) danh vi cua vat.
• Adding a wildcard symbol may retrieve word variants: thuat sach ty ((mang xa) or (nang x)) hoi. thieu nien ca ((tuc va) or (truc va)) danh vi cua vat*.