Perhaps you should try some spelling variations:
chuong trinh » cong trinh
trinh chao » trinh chat, trinh han, trinh giao
trinh cau » trinh chat, trinh han, trinh tai
dao hanh » dao thanh, dang hanh, ban hanh
lang van » dang van, tang van, hoang van
cao hanh » cao anh, bao hanh, cao danh
ban hang » ngan hang
trinh tu » trinh ky, trinh do
soi viet » so viet, hoi viet, oi viet
trinh co » trinh do, trinh cong, trinh hoa
cac cam » cad cam, cac cap, cac cau
van bac » van ban, van bao, van hac
co soi » cot soi, co so, co hoi
cam co » cac co, nam co, cay co
tri co » tai co

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( chuong trinh ((cao hanh) or (((dao hanh) or (ban hang)))) va cac cam co soi viet nam ) or ( chuong ((((trinh cau) or (trinh tu))) or (trinh chao)) lang van bac ((tri co) OR (trinh co)) soi viet nam ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( chuong trinh ((cao hanh) OR (((dao hanh) OR (ban hang)))) va cac cam co soi viet nam ) OR ( chuong ((((trinh cau) OR (trinh tu))) OR (trinh chao)) lang van bac ((tri co) OR (trinh co)) soi viet nam )).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( chuong trinh ((cao hanh) or (((dao hanh) or (ban hang)))) va cac cam co soi viet nam ) or ( chuong ((((trinh cau) or (trinh tu))) or (trinh chao)) lang van bac ((tri co) OR (trinh co)) soi viet nam ))".
• Adding a wildcard symbol may retrieve word variants: (( chuong trinh ((cao hanh) or (((dao hanh) or (ban hang)))) va cac cam co soi viet nam ) or ( chuong ((((trinh cau) or (trinh tu))) or (trinh chao)) lang van bac ((tri co) OR (trinh co)) soi viet nam ))*.