Perhaps you should try some spelling variations:
cau triet » cau trieu, su triet, cua triet
danh di » danh du, xanh di, danh dien
danh vi » hanh vi, dinh vi, danh va
sach ky » sac ky, sach y, sach ty
te sach » toc sach
thi toc » thi tac, thi goc, thi loc
hieu va » lieu va, hieu qua
va thi » van thi, vu thi, ha thi
toc va » hoc va, toc ta, tuc va
o hoi » co hoi, o hoc, o hai
x hoi » xa 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 ky nang ((x hoi) or (o hoi)). hieu va thi toc va ((danh vi) OR (danh di)) cau triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky nang ((x hoi) OR (o hoi)). hieu va thi toc va ((danh vi) OR (danh di)) cau triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ky nang ((x hoi) or (o hoi)). hieu va thi toc va ((danh vi) OR (danh di)) cau triet".
• Adding a wildcard symbol may retrieve word variants: te sach ky nang ((x hoi) or (o hoi)). hieu va thi toc va ((danh vi) OR (danh di)) cau triet*.