Perhaps you should try some spelling variations:
cua viet » ca viet, hoa viet, cua vat
nang ro » nang co, nang ra, nang rong
nang ho » nang hoc, nang co, tang ho
hieu va » lieu va, hieu qua
quoc va » nuoc va, duoc va, quoc oai
banh di » danh di, xanh di, banh chi
tu van » tu va
va cam » va cham, va cac, va cao
di cua » dai cua, doi cua, de cua

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: tu van ky ((nang ro) OR (nang ho)) hoi. hieu va cam ((quoc va) OR (quoc gia)) banh di cua viet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu van ky ((nang ro) or (nang ho)) hoi. hieu va cam ((quoc va) OR (quoc gia)) banh di cua viet~".
• Adding a wildcard symbol may retrieve word variants: tu van ky ((nang ro) or (nang ho)) hoi. hieu va cam ((quoc va) OR (quoc gia)) banh di cua viet*.