Perhaps you should try some spelling variations:
chuong trinh » cong trinh
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
dau luan » dan luan, dat luan, khau luan
cac cau » cac mau, bac cau, ca cau
cac hat » cac chat, cac hoat, cau hat
cac nam » bac nam, cac cam, cac ham
cac cay » ca cay, cac cam, cac cap
co hoi » co hoc, co loi
cau co » cau do, cac co, cay co
co oi » co loi, co doi, co toi
la va » la via, lua va, ly va
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 cao xuat va cac cay cong soi viet nam ) or ((( chuong trinh ky la va ((cac nam) or (cac hat)) ((co oi) or (co hoi)) viet nam ) or ( chuong trinh ((sau lan) OR (dau luan)) 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 la va ((cac nam) OR (cac hat)) ((co oi) OR (co hoi)) viet nam ) OR ( chuong trinh ((sau lan) OR (dau luan)) 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 la va ((cac nam) or (cac hat)) ((co oi) or (co hoi)) viet nam ) or ( chuong trinh ((sau lan) OR (dau luan)) 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 la va ((cac nam) or (cac hat)) ((co oi) or (co hoi)) viet nam ) or ( chuong trinh ((sau lan) OR (dau luan)) va cac cau co _ viet nam ))))*.