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
va dinh » van dinh, va kinh, va tinh
va danh » va dan, va hanh, dia danh
su sach » so sach, vu sach
so sanh » do sanh
nang xa » nang x, lang xa, nang ma
cua tre » cua te, cuu tre, cua triet
y nang » ky nang, ly nang, v nang
di cua » dai cua, doi cua, de 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: ((su sach) OR (so sanh)) y nang xa hoi. hieu van cach thuc ((va danh) OR (va dinh)) di cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su sach) or (so sanh)) y nang xa hoi. hieu van cach thuc ((va danh) OR (va dinh)) di cua tre~".
• Adding a wildcard symbol may retrieve word variants: ((su sach) or (so sanh)) y nang xa hoi. hieu van cach thuc ((va danh) OR (va dinh)) di cua tre*.