Perhaps you should try some spelling variations:
cach thuc » anh thuc, cac thu
van cach » va cach, van canh, vat cach
hieu van » hieu va, thien van, lieu va
danh du » danh dau, danh tu, dinh du
danh di » xanh di, danh dien, danh gia
thuc va » thuc vat, thuc dan, thuc day
so sach » bo sach, co sach, hoc sach
nang xa » nang x, lang xa, nang ma
so sanh » do sanh
cua tre » cua te, cuu tre, cua triet
y nang » ky nang, ly nang, v nang

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) OR (so sanh)) y nang xa hoi. hieu van cach thuc va ((danh di) OR (danh du)) cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((so sach) or (so sanh)) y nang xa hoi. hieu van cach thuc va ((danh di) OR (danh du)) cua tre~".
• Adding a wildcard symbol may retrieve word variants: ((so sach) or (so sanh)) y nang xa hoi. hieu van cach thuc va ((danh di) OR (danh du)) cua tre*.