Perhaps you should try some spelling variations:
nhien cac » hien cac, thien cac, hieu cac
su triet » su viet, su tien, ve triet
hanh dan » thanh dan, hanh san, canh dan
vien cac » vien bach, vien dai, vien da
va hanh » van hanh, va thanh, va danh
te sach » toc sach
ly nang » ky nang, ly hang, ly vang
ma hoi » mai hoi, xa hoi, ma hoa
y nang » ky nang, v nang, may nang
xuc va » duc va, tuc va, luc va
dan su » dang su

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) OR (ly nang)) ma hoi. thien ((nhien cac) or (vien cac)) xuc va hanh dan su triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ((y nang) OR (ly nang)) ma hoi. thien ((nhien cac) OR (vien cac)) xuc va hanh dan su triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ((y nang) OR (ly nang)) ma hoi. thien ((nhien cac) or (vien cac)) xuc va hanh dan su triet".
• Adding a wildcard symbol may retrieve word variants: te sach ((y nang) OR (ly nang)) ma hoi. thien ((nhien cac) or (vien cac)) xuc va hanh dan su triet*.