Perhaps you should try some spelling variations:
chuong trinh » cong trinh
trinh cao » trinh chao, trinh cau, tinh cao
soi viet » so viet, oi viet, doi viet
cau giay » cuu giai, cac giai
trinh co » trinh do, trinh cong, trinh hoa
hoi viet » hai viet, oi viet, thai viet
hac cay » cac cay, hoc cay, tac cay
coc soi » cot soi, cong soi
cac tay » cac cay, cac tac, cac tai
cay coc » cay co, cay cong
van hac » van hoc, van ha, van hai
lan van » luan van, lang van, tan van
cac soi » cac toi, cac moi, cac doi
tay cac » tai cac, tay bac, tap cac
ban van » ban dan, ban va, tan van
lan va » luan va, lanh va, lang va
co hoi » co hoc, co loi

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