Perhaps you should try some spelling variations:
cach thuc » anh thuc, cac thu
hieu van » hieu va, thien van, lieu va
van cach » va cach, van canh, vat cach
su sach » so sach, vu sach
so sanh » do sanh
lang xa » lang ha, dang xay, lang van
thuc va » thuc vat, thuc dan, thuc day
va danh » va dinh, va dan, va hanh
danh di » danh du, xanh di, danh dien
cua tre » cua te, cuu tre, cua triet
y lang » o lang, _ lang, tay lang
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 lang xa hoi. hieu van cach thuc va danh di cua tre~.
• Adding a wildcard symbol may retrieve word variants: ((su sach) or (so sanh)) y lang xa hoi. hieu van cach thuc va danh di cua tre*.