Perhaps you should try some spelling variations:
cua triet » cua viet, su triet
nam trung » nam trong, tai trung, ba trung
va triet » va thiet, va trien, ve triet
va danh » va dinh, va dan, dia danh
so sach » so sanh, bo sach, co sach
hieu va » lieu va, hieu qua
nang ma » tang ma, sang ma, nang cao
va hanh » van hanh, va thanh, ban hanh
y nang » ky nang, ly nang, v nang
va nam » van nam, ha nam, va nay
ma hoi » mai hoi, xa hoi, ma hoa

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: so sach y nang ma hoi. hieu va nam trung ((va hanh) OR (va danh)) vi ((cua triet) OR (va triet))~.
• Adding a wildcard symbol may retrieve word variants: so sach y nang ma hoi. hieu va nam trung ((va hanh) or (va danh)) vi ((cua triet) or (va triet))*.