Perhaps you should try some spelling variations:
cua viet » ca viet, hoa viet, cua vat
thanh di » thanh doi, thanh de, thanh do
va thanh » gia thanh, ban thanh, va tinh
sang mai » sang ma, sang tai, lang mai
thuc va » thuc vat, thuc dan, thuc day
mai hoi » mai khoi, dai hoi, lai hoi
ky sang » ky nang, ky dang, ky tang
su sach » so sach, vu sach
le nam » he nam, le na, te nam
di cua » dai cua, doi cua, de cua
su sac » su cac, su xac

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: ((su sac) OR (su sach)) ky sang mai hoi. hieu ((le nam) OR (ly nam)) thuc va thanh di cua viet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su sac) OR (su sach)) ky sang mai hoi. hieu ((le nam) or (ly nam)) thuc va thanh di cua viet~".
• Adding a wildcard symbol may retrieve word variants: ((su sac) OR (su sach)) ky sang mai hoi. hieu ((le nam) or (ly nam)) thuc va thanh di cua viet*.