Perhaps you should try some spelling variations:
chuong trinh » cong trinh
trinh chat » tinh chat, trinh luat, trinh han
chat doanh » chan doan, luat doanh, cac doanh
cho doanh » hoa doanh
trinh cho » trinh chao, trinh co, trinh cham
trinh cap » trinh cau, trinh lap, trinh cac
soi viet » so viet, hoi viet, oi viet
doanh va » doan va, doanh tai, doanh cua
trinh ca » trinh cau, trinh cua, trinh cac
cac cac » cac cach, ca cac, cac bac
phan va » phan van, nhan va, phan ha
phan ba » phan bo, phan dau, phan lap
cac cau » cac mau, bac cau, ca cau
bai cau » bai ca, ba cau, bac cau
o viet » so viet, hoc viet
cau so » cau do, cau o, cao so
co soi » cot soi, co so, co hoi
cac co » cac cong
han va » hang va, hanh va, nhan va
ca han » ca nhan, cap han, cua han
cau co » cau do, cay co, dau co
so o » so d

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: (((( chuong trinh ca han va cac cac co soi viet nam ) OR ( chuong trinh cap ((phan va) OR (phan ba)) cac cac co soi viet nam ))) OR ((( chuong trinh chat doanh va cac cau so o viet nam ) OR ( chuong trinh cho doanh va bai cau co soi viet nam ))))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(((( chuong trinh ca han va cac cac co soi viet nam ) or ( chuong trinh cap ((phan va) OR (phan ba)) cac cac co soi viet nam ))) or ((( chuong trinh chat doanh va cac cau so o viet nam ) or ( chuong trinh cho doanh va bai cau co soi viet nam ))))~".
• Adding a wildcard symbol may retrieve word variants: (((( chuong trinh ca han va cac cac co soi viet nam ) or ( chuong trinh cap ((phan va) OR (phan ba)) cac cac co soi viet nam ))) or ((( chuong trinh chat doanh va cac cau so o viet nam ) or ( chuong trinh cho doanh va bai cau co soi viet nam ))))*.