Perhaps you should try some spelling variations:
cua viet » ca viet, hoa viet, cua vat
nang xa » nang x, lang xa, nang ma
va cham » va chat, va tham
quoc va » nuoc va, duoc va, quoc gia
va hanh » van hanh, va thanh, va danh
hanh di » hanh vi, hanh de, hang di
tu dan » tuc dan, tu ban, cu dan
dan ky » van ky
va cam » va cac, va cao, va cai
di cua » dai cua, doi cua, de cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu dan ky nang xa hoi. hieu ((va cam) or (va cham)) quoc va hanh di cua viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu dan ky nang xa hoi. hieu ((va cam) OR (va cham)) quoc va hanh di cua viet.
• Adding a wildcard symbol may retrieve word variants: tu dan ky nang xa hoi. hieu ((va cam) or (va cham)) quoc va hanh di cua viet*.