Perhaps you should try some spelling variations:
chuong trinh » cong trinh
trinh cham » trinh han, trinh phan, trinh cau
trinh chao » trinh han, trinh co, trinh giao
trinh chat » tinh chat, trinh luat, trinh han
chat anh » nhat anh, nhat hanh, phat hanh
binh va » tinh va, sinh va, benh va
oi viet » hoi viet, o viet, cuoi viet
so viet » hoc viet
cac cam » cad cam, cac cap, cac cau
cac nam » bac nam, cac ham, cai nam
anh va » hanh va
cau co » cau do, cay co, dau co
cac co » cac 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 chat anh va ((cac nam) OR (cac cam)) co so viet nam ) OR ( cong ((trinh cham) OR (trinh chao)) binh va cac ((cau co) OR (cac co)) oi viet nam ))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( chuong trinh chat anh va ((cac nam) or (cac cam)) co so viet nam ) or ( cong ((trinh cham) OR (trinh chao)) binh va cac ((cau co) or (cac co)) oi viet nam ))~".
• Adding a wildcard symbol may retrieve word variants: (( chuong trinh chat anh va ((cac nam) or (cac cam)) co so viet nam ) or ( cong ((trinh cham) OR (trinh chao)) binh va cac ((cau co) or (cac co)) oi viet nam ))*.