Perhaps you should try some spelling variations:
cua viet » ca viet, hoa viet, cua vat
xanh di » danh di, vanh dai, xanh tai
nang ho » nang hoc, nang co, tang ho
va xanh » va danh, va hanh, va anh
quoc va » nuoc va, duoc va, quoc gia
nang ro » nang co, nang ra, nang rong
di cua » dai cua, doi cua, de cua
tu van » tu va
va cao » va cac, va co, va dao
va cam » va cham, va cac, va cai

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu van ky ((nang ro) or (nang ho)) hoi. hieu ((va cam) or (va cao)) quoc va xanh di cua viet~.
• 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) OR (va cao)) quoc va xanh di cua viet.
• Adding a wildcard symbol may retrieve word variants: tu van ky ((nang ro) or (nang ho)) hoi. hieu ((va cam) or (va cao)) quoc va xanh di cua viet*.