Perhaps you should try some spelling variations:
thuc dan » thuc hanh, hoc dan, thuc vat
so sach » so sanh, bo sach, co sach
sach ky » sac ky, sach y, sach ty
hieu va » lieu va, hieu qua
thuc va » thuc vat, thuc day
vi cua » vai cua, di cua
cua te » cua tu
x hoi » xa hoi, o hoi, x ho
va am » va lam, va cam

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: so sach ky nang x hoi. hieu va am ((thuc va) OR (thuc dan)) hanh vi cua te~.
• Adding a wildcard symbol may retrieve word variants: so sach ky nang x hoi. hieu va am ((thuc va) or (thuc dan)) hanh vi cua te*.