Perhaps you should try some spelling variations:
chuong trinh » cong trinh
trinh cao » trinh chao, trinh cau, tinh cao
thai viet » thi viet, tai viet, mai viet
soi viet » so viet, hoi viet, oi viet
trinh co » trinh do, trinh cong, trinh hoa
van cac » van hac, van cau, van bac
cac tap » cac cap, cac tac, cac tai
co thai » do thai, ca thai, co hai
cay coc » cay co, cay cong
cac cay » ca cay, cac cam, cac cap
cao lan » cao van, cao dang, cao tang
lan van » luan van, lang van, tan van
coc soi » cot soi, cong soi
tap coc » tap co, tap cac, tap cong
co lan » co ban, co dan, co lao
ky lan » ky dan, ky la
va cau » van cau, va cao, va cai
va dau » va dao
xay co » cay co, tay co, lay co
lan va » luan va, lanh va, lang 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 cao lan va cac tap coc soi viet nam ) or ( chuong trinh co lan van cac cay coc soi viet nam ))) or ( chuong trinh ky lan ((va cau) OR (va dau)) xay co thai viet nam ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((( chuong trinh cao lan va cac tap coc soi viet nam ) OR ( chuong trinh co lan van cac cay coc soi viet nam ))) OR ( chuong trinh ky lan ((va cau) OR (va dau)) xay co thai viet nam )).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(((( chuong trinh cao lan va cac tap coc soi viet nam ) or ( chuong trinh co lan van cac cay coc soi viet nam ))) or ( chuong trinh ky lan ((va cau) OR (va dau)) xay co thai viet nam ))".
• Adding a wildcard symbol may retrieve word variants: (((( chuong trinh cao lan va cac tap coc soi viet nam ) or ( chuong trinh co lan van cac cay coc soi viet nam ))) or ( chuong trinh ky lan ((va cau) OR (va dau)) xay co thai viet nam ))*.