Perhaps you should try some spelling variations:
cua viet » ca viet, hoa viet, cua vat
hanh dai » hanh tai, hanh dao, vanh dai
nam thuc » nam thuoc, am thuc, nam thu
sang tao » hang tai
sang ma » tang ma, nang ma, mang may
hieu le » hieu ve, hieu he, hieu ly
thuc va » thuc vat, thuc dan, thuc day
va hanh » van hanh, va thanh, va danh
su sach » so sach, vu sach
le nam » ly nam, he nam, le na
su xac » pu xac, su cac

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((su sach) or (su xac)) ky ((sang ma) or (sang tao)) hoi. hieu le nam thuc va hanh dai cua viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (su xac)) ky ((sang ma) OR (sang tao)) hoi. hieu le nam thuc va hanh dai cua viet.
• Adding a wildcard symbol may retrieve word variants: ((su sach) or (su xac)) ky ((sang ma) or (sang tao)) hoi. hieu le nam thuc va hanh dai cua viet*.