Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
doanh van » doanh va, doanh ban, doanh nhan
thien van » thi van
doan van » doan va, hoang van, luan van
cac tuc » cac toc, cac tu, cac tac
te sach » toc sach
sach ky » sac ky, sach y, sach ty
hieu va » lieu va, hieu qua
tuc va » thuc va, truc va, tuc xa
x hoi » xa hoi, o hoi, x ho

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: te sach ky nang x hoi. ((hieu va) OR (thien van)) cac tuc va ((doanh van) OR (doan van)) cua triet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ky nang x hoi. ((hieu va) or (thien van)) cac tuc va ((doanh van) OR (doan van)) cua triet~".
• Adding a wildcard symbol may retrieve word variants: te sach ky nang x hoi. ((hieu va) or (thien van)) cac tuc va ((doanh van) OR (doan van)) cua triet*.