Perhaps you should try some spelling variations:
chuong trinh » cong trinh
trinh chao » trinh chat, trinh han, trinh giao
soi viet » so viet, oi viet, doi viet
trinh co » trinh do, trinh cong, trinh hoa
hoi viet » hai viet, oi viet, thai viet
chao lan » cao lan, chao van, chao yang
tay cac » tai cac, tay bac, tap cac
van cau » van dau, van hau, van chat
cac soi » cac toi, cac moi, cac doi
cay coc » cay co, cay cong
coc soi » cot soi, cong soi
cac cay » ca cay, cac cam, cac cap
lan van » luan van, lang van, tan van
van cac » van hac, van bac, dan cac
cac tay » cac tac, cac tai, cac tap
dan van » dang van, doan van, dao van
co dan » co ban, ca dan, cao dang
ky lan » ky dan, ky la
xay co » cay co, lay co
tay co » ty co, cay co, tay o

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