Perhaps you should try some spelling variations:
thanh doi » thanh loi, thanh moi, thanh do
cua viet » ca viet, hoa viet, cua vat
thanh di » thanh de, thanh do, thanh dinh
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
le nam » he nam, le na, te nam
sac ky » cac ky, sai ky
su sac » su sach, 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 ky sang mai hoi. hieu ((le nam) OR (ly nam)) thuc va ((thanh di) OR (thanh doi)) cua viet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sac ky sang mai hoi. hieu ((le nam) or (ly nam)) thuc va ((thanh di) OR (thanh doi)) cua viet~".
• Adding a wildcard symbol may retrieve word variants: su sac ky sang mai hoi. hieu ((le nam) or (ly nam)) thuc va ((thanh di) OR (thanh doi)) cua viet*.