Perhaps you should try some spelling variations:
chuong trinh » cong trinh
trinh cuay » trinh cua, trinh chuan, trinh luat
cuay doan » chuan doan, chan doan, cua dan
trinh tu » trinh ky, trinh do
soi viet » so viet, hoi viet, noi viet
cay cong » cac cong, cao cong, cau cong
doi viet » dai viet, hoi viet, do viet
tac cay » tac can, tao cay, cac cay
oi viet » hoi viet, o viet, cuoi viet
cac cap » cao cap, cac cam, cac cau
may dan » cay dan, mat dan, may van
ca cay » cua cay, cac cay, ca cac
cap co » cap cho, tap co, cap do
tu dan » tuc dan, tu ban, cu dan
dan va » dan ca, ban va, han va
cay co » cac co, tay co
va ca » va cao, va cai, va cau
co oi » co hoi, co loi, co doi

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 cuay doan va cac cap co ((soi viet) or (doi viet)) nam ) or ( chuong trinh ((may dan) or (may san)) va ca cay cong ((soi viet) or (doi viet)) nam ))) or ( chuong trinh tu dan va tac cay co oi viet nam ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((( chuong trinh cuay doan va cac cap co ((soi viet) OR (doi viet)) nam ) OR ( chuong trinh ((may dan) OR (may san)) va ca cay cong ((soi viet) OR (doi viet)) nam ))) OR ( chuong trinh tu dan va tac cay co oi viet nam )).
• Adding a wildcard symbol may retrieve word variants: (((( chuong trinh cuay doan va cac cap co ((soi viet) or (doi viet)) nam ) or ( chuong trinh ((may dan) or (may san)) va ca cay cong ((soi viet) or (doi viet)) nam ))) or ( chuong trinh tu dan va tac cay co oi viet nam ))*.