Perhaps you should try some spelling variations:
ky sang » ky dang, duy sang
ky tang » ky dang, kho tang, ky trong
hieu le » hieu ve, hieu he, hieu ly
thuc va » thuc vat, thuc dan, thuc day
va hanh » van hanh, va thanh, va danh
hanh di » hanh vi, hanh de, hang di
ca viet » va viet, co viet, hoa viet
su xac » pu xac, su cac
ma hoi » mai hoi, xa hoi, ma hoa
le am » le ham, le nam, le a
di ca » di cau, di cua, doi ca

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

• Performing a fuzzy search may retrieve terms with similar spellings: su xac ((((ky sang) OR (ky nang))) or (ky tang)) ma hoi. hieu le am thuc va hanh di ca viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su xac ((((ky sang) OR (ky nang))) OR (ky tang)) ma hoi. hieu le am thuc va hanh di ca viet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su xac ((((ky sang) OR (ky nang))) or (ky tang)) ma hoi. hieu le am thuc va hanh di ca viet".
• Adding a wildcard symbol may retrieve word variants: su xac ((((ky sang) OR (ky nang))) or (ky tang)) ma hoi. hieu le am thuc va hanh di ca viet*.