Perhaps you should try some spelling variations:
ve triet » va trien, su triet
va triet » va thiet, va trien, cua triet
danh tai » doanh tai, dinh tai, hanh tai
sach ky » sac ky, sach y, sach ty
va danh » va dinh, va dan, va hanh
so sach » so sanh, bo sach, co sach
cam tuc » cam tu, nam thuc, dam thuc
hieu va » lieu va, hieu qua
sang ma » tang ma, nang ma, sang tao
ky sang » ky nang, ky dang, ky tang
ma hoi » mai hoi, xa hoi, ma hoa

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: so sach ky sang ma hoi. hieu va ((cam tuc) or (cam xuc)) va danh tai ((va triet) OR (ve triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach ky sang ma hoi. hieu va ((cam tuc) OR (cam xuc)) va danh tai ((va triet) OR (ve triet))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sach ky sang ma hoi. hieu va ((cam tuc) or (cam xuc)) va danh tai ((va triet) OR (ve triet))*".