Perhaps you should try some spelling variations:
doanh luan » doanh nhan
hieu van » hieu va, thien van, lieu va
luan cua » quan cua, lua cua, luat cua
te sach » toc sach
nang xa » nang x, lang xa, nang ma
van cac » van hac, van cau, van bac
cua tre » cua te, cuu tre, cua triet
y nang » ky nang, ly nang, v nang
xuc va » duc va, tuc va, luc va
loc va » hoc va, luc va

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: te sach y nang xa hoi. hieu van cac ((xuc va) or (loc va)) doanh luan cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach y nang xa hoi. hieu van cac ((xuc va) OR (loc va)) doanh luan cua tre.
• Adding a wildcard symbol may retrieve word variants: te sach y nang xa hoi. hieu van cac ((xuc va) or (loc va)) doanh luan cua tre*.