Perhaps you should try some spelling variations:
cau tren » cu tren, dau tren, ca tren
hieu van » hieu va, thien van, lieu va
cac thuc » cach thuc, cac thu, can thuc
cuu tre » cua tre, cau treo
danh vi » hanh vi, dinh vi, danh di
va danh » va dinh, va dan, va hanh
thuc va » thuc vat, thuc dan, thuc day
vu sach » vu bach, su sach, vu khach
nang xa » nang x, lang xa, nang ma
so sanh » do sanh
van cac » van hac, van cau, van bac
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: ((vu sach) OR (so sanh)) y nang xa hoi. hieu van cac thuc va danh vi ((cuu tre) OR (cau tren))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((vu sach) or (so sanh)) y nang xa hoi. hieu van cac thuc va danh vi ((cuu tre) OR (cau tren))~".
• Adding a wildcard symbol may retrieve word variants: ((vu sach) or (so sanh)) y nang xa hoi. hieu van cac thuc va danh vi ((cuu tre) OR (cau tren))*.