Perhaps you should try some spelling variations:
chuong trinh » cong trinh
trinh cac » trinh cau, trinh chat, trinh chao
lanh sao » lanh dao, lanh sang, anh so
cac lanh » cay lanh, cac banh, cac lang
cao cap » cao chat
cac cap » cac cam, cac cau, cac cay
cot soi » cot loi, cong soi
cac dai » cac dan, can dai, bac dai
cac anh » cac banh, ca anh, cac nganh
cao anh » cao dang, cao tang, cao bang
co soi » co so, co hoi, co loi
do oi » do moi, do voi
do o » do bo, dao o, so o

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 ((cac anh) or (cao anh)) va ((cac dai) or (cac bai)) ((co soi) or (cot soi)) viet nam ) or ( chuong trinh cac lanh sao ((cac cap) OR (cao cap)) ((do oi) or (do o)) viet nam ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( chuong trinh ((cac anh) OR (cao anh)) va ((cac dai) OR (cac bai)) ((co soi) OR (cot soi)) viet nam ) OR ( chuong trinh cac lanh sao ((cac cap) OR (cao cap)) ((do oi) OR (do o)) viet nam )).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( chuong trinh ((cac anh) or (cao anh)) va ((cac dai) or (cac bai)) ((co soi) or (cot soi)) viet nam ) or ( chuong trinh cac lanh sao ((cac cap) OR (cao cap)) ((do oi) or (do o)) viet nam ))".
• Adding a wildcard symbol may retrieve word variants: (( chuong trinh ((cac anh) or (cao anh)) va ((cac dai) or (cac bai)) ((co soi) or (cot soi)) viet nam ) or ( chuong trinh cac lanh sao ((cac cap) OR (cao cap)) ((do oi) or (do o)) viet nam ))*.