Perhaps you should try some spelling variations:
chuong trinh » cong trinh
soi viet » so viet, hoi viet, oi viet
cong soi » cong so, cong goi, cong noi
trinh co » trinh do, trinh cong, trinh hoa
loi viet » loai viet, hoi viet, oi viet
chao lan » cao lan, chao yang, khao luan
chao van » cao van, hao van, thao van
dan van » dang van, doan van, dao van
cau xay » cau giay
van cau » van dau, van hau, van chat
coc soi » cot soi
cac cay » ca cay, cac cam, cac cap
cac tay » cac tac, cac tap, cam tay
van cac » van hac, van bac, dan cac
cac soi » cac toi, cac moi, cac doi
cac tai » cao tai, cac bai, cac dai
co dan » co ban, ca dan, cao dang
la van » lai van, lan van, le van
xay co » cay co, tay co, lay co
co loi » co hoi
ky la » ky le, ky va

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