Perhaps you should try some spelling variations:
chuong trinh » cong trinh
trinh cac » trinh cau, trinh chat, trinh chao
cac lanh » cay lanh, cac banh, cac lang
soi viet » so viet, hoi viet, oi viet
lanh va » hanh va, anh va, doanh va
cac tap » cac cap, cac tac
cac tai » cao tai, cac bai, cac dai
dao cac » do cac, sao cac, tao cac
co soi » cot soi, co so, co hoi

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