Perhaps you should try some spelling variations:
chuong trinh » cong trinh
trinh cau » trinh chat, trinh chao, trinh tu
trinh cao » trinh chao, tinh cao, trinh cho
trinh co » trinh do, trinh cong, trinh hoa
soi viet » so viet, hoi viet, oi viet
cac tai » cao tai, cac bai, cac dai
cac tay » cac cay, cac tac, cac tap
cau lan » cau lanh, cao lan, sau lan
cac cam » cad cam, cac cap, cac cau
co soi » cot soi, co so, co hoi
cam co » cac co, nam co, cay co
lan va » luan va, lanh va, lan van

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) OR (trinh co)) lan va cac cam co soi viet nam ) or ( chuong trinh cau lan va ((cac tay) or (cac tai)) co soi viet nam ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( chuong ((trinh cao) OR (trinh co)) lan va cac cam co soi viet nam ) OR ( chuong trinh cau lan va ((cac tay) OR (cac tai)) co soi viet nam )).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( chuong ((trinh cao) OR (trinh co)) lan va cac cam co soi viet nam ) or ( chuong trinh cau lan va ((cac tay) or (cac tai)) co soi viet nam ))".
• Adding a wildcard symbol may retrieve word variants: (( chuong ((trinh cao) OR (trinh co)) lan va cac cam co soi viet nam ) or ( chuong trinh cau lan va ((cac tay) or (cac tai)) co soi viet nam ))*.