Perhaps you should try some spelling variations:
doanh luan » doanh nhan
luan cua » quan cua, lua cua, luat cua
te sach » toc sach
sach ky » sac ky, sach y, sach ty
van cac » van hac, van bac, dan cac
van cau » van dau, van hau, van chat
nang xa » nang x, lang xa, nang ma
cua tre » cua te, cuu tre, cua triet
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 ky nang xa hoi. hieu ((van cac) OR (van cau)) ((xuc va) or (loc va)) doanh luan cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky nang xa hoi. hieu ((van cac) OR (van cau)) ((xuc va) OR (loc va)) doanh luan cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ky nang xa hoi. hieu ((van cac) OR (van cau)) ((xuc va) or (loc va)) doanh luan cua tre".
• Adding a wildcard symbol may retrieve word variants: te sach ky nang xa hoi. hieu ((van cac) OR (van cau)) ((xuc va) or (loc va)) doanh luan cua tre*.