Perhaps you should try some spelling variations:
chuong trinh » cong trinh
trinh sau » trinh san, trinh cau, trinh su
trinh cao » trinh chao, trinh co, trinh cau
cao xuat » cao xuan, cac xuat, san xuat
cay cong » cac cong, cao cong, cau cong
cong soi » cong so, cong goi, cong noi
soi viet » so viet, hoi viet, oi viet
cac cau » cac mau, bac cau, ca cau
sau lan » dau luan
cac nam » bac nam, cac cam, cac ham
cac cay » ca cay, cac cam, cac cap
co hoi » co hoc, co loi
lan va » luan va, lanh va, lan van
ky lan » ky dan, ky la
cau co » cau do, cac co, cay co
co oi » co loi, co doi, co toi

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