Perhaps you should try some spelling variations:
thieu nien » thien nhien
tu sach » thu sach, su sach, te sach
danh vi » hanh vi, dinh vi, danh di
truc va » thuc va, thuc vat, trung va
sach tu » sach thu, cach tu, sach ty
nien ca » nien cua, bien ca, dien ca
nang xa » lang xa, nang ma, mang xa
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: tu sach tu ((nang 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: tu sach tu ((nang 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: tu sach tu ((nang xa) or (nang x)) hoi. thieu nien ca ((tuc va) or (truc va)) danh vi cua vat*.