Perhaps you should try some spelling variations:
cua viet » ca viet, cua vat, cua dieu
hanh hoi » hanh thoi, hanh noi, hanh hoa
thuc va » thuc vat, thuc dan, thuc day
ky tang » ky nang, ky dang, kho tang
hoc hoi » hoc khoi, hoc hoa, hoc noi
hoa doi » hoa dai, hoc doi, xoa doi
hieu ve » hieu va, hieu van
va hanh » van hanh, va thanh, va danh
te sac » te sach, te cac, te san
sac ky » cac ky, sai ky
ve am » va am

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sac ky tang ((hoc hoi) or (hoa doi)). hieu ve am thuc va hanh hoi ((cua viet) OR (hoa viet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sac ky tang ((hoc hoi) OR (hoa doi)). hieu ve am thuc va hanh hoi ((cua viet) OR (hoa viet)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sac ky tang ((hoc hoi) or (hoa doi)). hieu ve am thuc va hanh hoi ((cua viet) OR (hoa viet))".
• Adding a wildcard symbol may retrieve word variants: te sac ky tang ((hoc hoi) or (hoa doi)). hieu ve am thuc va hanh hoi ((cua viet) OR (hoa viet))*.