Perhaps you should try some spelling variations:
chuong trinh » cong trinh
trinh nhat » trinh chat, trinh nha, trinh nhap
nhat hanh » nhat ban, nhat minh
doi viet » dai viet, hoi viet, oi viet
nhat anh » nhat minh, nhat ban, nhat n3
soi viet » hoi viet, oi viet, noi viet
cac cay » ca cay, cac cam, cac cap
hanh va » hang va, hanh vi
so viet » hoc viet
cac cac » cac cach, ca cac, cac bac
cac co » cac cong
cay co » tay co, cay cong

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: (( chuong trinh nhat anh va cac cac co ((soi viet) OR (doi viet)) nam ) OR ( chuong trinh nhat hanh va cac cay co so viet nam ))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( chuong trinh nhat anh va cac cac co ((soi viet) OR (doi viet)) nam ) or ( chuong trinh nhat hanh va cac cay co so viet nam ))~".
• Adding a wildcard symbol may retrieve word variants: (( chuong trinh nhat anh va cac cac co ((soi viet) OR (doi viet)) nam ) or ( chuong trinh nhat hanh va cac cay co so viet nam ))*.