Perhaps you should try some spelling variations:
chuong trinh » cong trinh
trinh chao » trinh chat, trinh han, trinh co
chao tang » cao tang, chao yang, cho tang
trinh sau » trinh san, trinh cau, trinh su
trinh cao » trinh co, trinh cau, tinh cao
loi viet » loai viet, hoi viet, oi viet
doi viet » dai viet, hoi viet, oi viet
tang van » dang van, hoang van, trong van
cac cau » cac mau, bac cau, ca cau
cho doi » cho moi, cuoc doi, cho tuoi
cao cap » cao chat
sau lan » dau luan
cac tap » cac tac, cac tai
tan van » tran van, luan van, dang van
cao tan » cao tang, cao tai, cao van
van cac » van hac, van cau, van bac
cac cap » cac cam, cac cay, sach cap
lan va » luan va, lanh va, lan van
va cao » va cac, va co, va dao
co loi » 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 chao tang van ((cac cap) OR (cac cau)) co loi viet nam ) or ( chuong trinh cao tan van cac tap co loi viet nam ))) or ( chuong trinh sau lan va cao cap cho doi viet nam ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((( chuong trinh chao tang van ((cac cap) OR (cac cau)) co loi viet nam ) OR ( chuong trinh cao tan van cac tap co loi viet nam ))) OR ( chuong trinh sau lan va cao cap cho doi viet nam )).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(((( chuong trinh chao tang van ((cac cap) OR (cac cau)) co loi viet nam ) or ( chuong trinh cao tan van cac tap co loi viet nam ))) or ( chuong trinh sau lan va cao cap cho doi viet nam ))".
• Adding a wildcard symbol may retrieve word variants: (((( chuong trinh chao tang van ((cac cap) OR (cac cau)) co loi viet nam ) or ( chuong trinh cao tan van cac tap co loi viet nam ))) or ( chuong trinh sau lan va cao cap cho doi viet nam ))*.