Perhaps you should try some spelling variations:
chuong trinh » cong trinh
trinh chao » trinh chat, trinh han, trinh co
cong soi » cong so, cong goi, cong noi
loi viet » loai viet, hoi viet, oi viet
cac tay » cac tac, cac tai, cac tap
cau xay » cau giay
van cau » van dau, van hau, van chat
coc soi » cot soi
cac cay » ca cay, cac cam, cac cap
van cac » van hac, van bac, dan cac
lan van » luan van, lang van, tan van
cac doi » cac dai, cac toi, cau doi
cac soi » cac toi, cac moi, cac oi
co dan » co ban, cao dang
co loi » co hoi
ca dan » cac dan, ca dao
xay co » cay co, tay co, lay co
lan va » luan va, lanh va, lang va
ky va » ly va, ke va, my va
ky la » ky le

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 ((lan va) OR (lan van)) cac tay ((cac soi) or (cac doi)) viet nam ) or ( chuong trinh ((co dan) or (ca dan)) van cac cay ((coc soi) or (cong soi)) viet nam ))) or ( chuong trinh ((ky la) or (ky va)) van cau xay co loi viet nam ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((( chuong trinh chao ((lan va) OR (lan van)) cac tay ((cac soi) OR (cac doi)) viet nam ) OR ( chuong trinh ((co dan) OR (ca dan)) van cac cay ((coc soi) OR (cong soi)) viet nam ))) OR ( chuong trinh ((ky la) OR (ky va)) van cau xay co loi viet nam )).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(((( chuong trinh chao ((lan va) OR (lan van)) cac tay ((cac soi) or (cac doi)) viet nam ) or ( chuong trinh ((co dan) or (ca dan)) van cac cay ((coc soi) or (cong soi)) viet nam ))) or ( chuong trinh ((ky la) or (ky va)) van cau xay co loi viet nam ))".
• Adding a wildcard symbol may retrieve word variants: (((( chuong trinh chao ((lan va) OR (lan van)) cac tay ((cac soi) or (cac doi)) viet nam ) or ( chuong trinh ((co dan) or (ca dan)) van cac cay ((coc soi) or (cong soi)) viet nam ))) or ( chuong trinh ((ky la) or (ky va)) van cau xay co loi viet nam ))*.