Perhaps you should try some spelling variations:
thieu bien » thieu nien, tieu bieu, hien bien
bien cac » vien cac, dien cac, bien ca
cac thuc » cach thuc, cac thu, can thuc
cua viet » ca viet, hoa viet, cua vat
tu sach » thu sach, su sach, te sach
sach tu » sach thu, cach tu, sach ty
nang xa » lang xa, nang ma, mang xa
thuc va » thuc vat, thuc dan, thuc day
va hanh » van hanh, va thanh, va danh
vi cua » vai cua, di cua

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

• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach tu ((nang xa) OR (nang x)) hoi. thieu bien cac thuc va hanh vi cua viet~.
• Adding a wildcard symbol may retrieve word variants: tu sach tu ((nang xa) or (nang x)) hoi. thieu bien cac thuc va hanh vi cua viet*.