Perhaps you should try some spelling variations:
chuong trinh » cong trinh
trinh sau » trinh san, trinh cau, trinh su
trinh co » trinh do, trinh cong, trinh hoa
cay cong » cac cong, cao cong, cau cong
soi viet » so viet, oi viet, doi viet
hoi viet » hai viet, oi viet, thai viet
loi viet » loai viet, oi viet, doi viet
cac bac » cac bai, cac ban, cac cach
cac cac » cac cach, ca cac, cac cam
sau lan » dau luan
cac nam » bac nam, cac cam, cac ham
cac cay » ca cay, cac cam, cac cap
co xuat » co xua, hoa xuat, cao xuan
nam co » nam cao, nam bo, nam so
co loi » co hoi
ky lan » ky dan
lan va » luan va, lanh va, lan van
ky la » ky le, ky va

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 co xuat va cac cay cong ((soi viet) or (hoi viet)) nam ) or ((( chuong trinh ((ky lan) or (ky la)) va cac nam co loi viet nam ) or ( chuong trinh sau lan va ((cac cac) OR (cac bac)) co _ viet nam ))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( chuong trinh co xuat va cac cay cong ((soi viet) OR (hoi viet)) nam ) OR ((( chuong trinh ((ky lan) OR (ky la)) va cac nam co loi viet nam ) OR ( chuong trinh sau lan va ((cac cac) OR (cac bac)) co _ viet nam )))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( chuong trinh co xuat va cac cay cong ((soi viet) or (hoi viet)) nam ) or ((( chuong trinh ((ky lan) or (ky la)) va cac nam co loi viet nam ) or ( chuong trinh sau lan va ((cac cac) OR (cac bac)) co _ viet nam ))))".
• Adding a wildcard symbol may retrieve word variants: (( chuong trinh co xuat va cac cay cong ((soi viet) or (hoi viet)) nam ) or ((( chuong trinh ((ky lan) or (ky la)) va cac nam co loi viet nam ) or ( chuong trinh sau lan va ((cac cac) OR (cac bac)) co _ viet nam ))))*.