Perhaps you should try some spelling variations:
chuong trinh » cong trinh
trinh cham » trinh phan, trinh cau, trinh nha
trinh chat » tinh chat, trinh luat, trinh phan
trinh chao » trinh co, trinh giao, trinh phan
trinh han » trinh quan
choi viet » cuoi viet, chi viet, thoai viet
hoi viet » hai viet, oi viet, thai viet
doanh va » doan va, doanh tai, doanh cua
cao cap » cao chat
dao cao » dao tao, bao cao, tao cao
lanh va » hanh va, anh va, lang van
cot soi » cot loi, cong soi
cac tap » cac cap, cac tac, cac tai
cap do » cau do
co soi » co so, co hoi, co loi

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 cham ((lanh va) OR (doanh va)) cac tap ((co soi) OR (cot soi)) viet nam ) OR ( chuong ((((trinh chao) OR (trinh han))) OR (trinh chat)) lanh dao cao cap do ((choi viet) OR (hoi viet)) nam ))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( chuong trinh cham ((lanh va) or (doanh va)) cac tap ((co soi) or (cot soi)) viet nam ) or ( chuong ((((trinh chao) OR (trinh han))) or (trinh chat)) lanh dao cao cap do ((choi viet) or (hoi viet)) nam ))~".
• Adding a wildcard symbol may retrieve word variants: (( chuong trinh cham ((lanh va) or (doanh va)) cac tap ((co soi) or (cot soi)) viet nam ) or ( chuong ((((trinh chao) OR (trinh han))) or (trinh chat)) lanh dao cao cap do ((choi viet) or (hoi viet)) nam ))*.