Perhaps you should try some spelling variations:
chuong trinh » cong trinh
trinh cuay » trinh cua, trinh chuan, trinh quan
trinh cau » trinh chat, trinh chao, trinh tu
trinh cay » trinh may, trinh cac, trinh bay
cay cong » cac cong, cao cong, cau cong
cong hoa » dong hoa, dong hoc, hang hoa
tac cay » tac can, tao cay, cac cay
cau dan » cau danh, cac dan, ca dan
so viet » hoc viet
cay dan » cac dan, ca dan, cay lanh
cay co » cac co, tay co
dan va » dan ca, ban va, han va
ca cay » cua cay, cac cay, ca cac
cap do » cau do
cap co » cap cho, tap co, cac co
o viet » hoc viet
va ca » va cao, va cai, va cau
co o » co so, co _, so 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 cuay) or (trinh luat)) doan va cac ((cap co) OR (cap do)) so viet nam ) or ( chuong trinh cay dan va ca cay cong hoa viet nam ))) or ( chuong trinh cau dan va tac cay co o viet nam ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((( chuong ((trinh cuay) OR (trinh luat)) doan va cac ((cap co) OR (cap do)) so viet nam ) OR ( chuong trinh cay dan va ca cay cong hoa viet nam ))) OR ( chuong trinh cau dan va tac cay co o viet nam )).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(((( chuong ((trinh cuay) or (trinh luat)) doan va cac ((cap co) OR (cap do)) so viet nam ) or ( chuong trinh cay dan va ca cay cong hoa viet nam ))) or ( chuong trinh cau dan va tac cay co o viet nam ))".
• Adding a wildcard symbol may retrieve word variants: (((( chuong ((trinh cuay) or (trinh luat)) doan va cac ((cap co) OR (cap do)) so viet nam ) or ( chuong trinh cay dan va ca cay cong hoa viet nam ))) or ( chuong trinh cau dan va tac cay co o viet nam ))*.