Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
su triet » su tien, ve triet
hanh vai » hanh vi, hanh va, hanh tai
cac thoi » cac toi, cac hop, cac tro
vu sach » vu bach, su sach, vu khach
va hanh » van hanh, va thanh, va danh
thoi va » hoi va, thai va, tho va
van cac » van hac, van cau, van bac
sang ma » tang ma, nang ma, sang tao
ky sang » ky nang, ky dang, ky tang
so sach » so sanh, bo sach, co sach
su viet » so viet
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: ((vu sach) OR (so sach)) ky sang ma hoi. hieu van cac thoi va hanh vai ((su triet) OR (su viet))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((vu sach) or (so sach)) ky sang ma hoi. hieu van cac thoi va hanh vai ((su triet) OR (su viet))~".
• Adding a wildcard symbol may retrieve word variants: ((vu sach) or (so sach)) ky sang ma hoi. hieu van cac thoi va hanh vai ((su triet) OR (su viet))*.