Perhaps you should try some spelling variations:
doanh vang » doanh van, doanh sang, doanh quang
cua triet » cua viet, su triet, va triet
van doanh » toan doanh, van dong, van thanh
hieu van » hieu va, thien van, lieu va
vang cua » mang cua, hang cua, tang cua
toc sach » hoc sach, doc sach, thuoc sach
van cac » van hac, van cau, van bac
cac toc » cac toi, cac nuoc, cac thoi
toc van » hoc van, toc san, tac van
x hoi » o hoi, x ho, 5 hoi

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) OR (toc sach)) ky nang ((x hoi) or (xa hoi)). hieu van cac toc van doanh vang cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((te sach) OR (toc sach)) ky nang ((x hoi) OR (xa hoi)). hieu van cac toc van doanh vang cua triet*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((te sach) OR (toc sach)) ky nang ((x hoi) or (xa hoi)). hieu van cac toc van doanh vang cua triet*".