Perhaps you should try some spelling variations:
chuong trinh » cong trinh
trinh cao » trinh chao, trinh co, tinh cao
trinh cau » trinh chat, trinh chao, trinh tu
trinh sau » trinh san, trinh su, trinh mau
cay cong » cao cong, cau cong, cay trong
cac cong » cua cong
soi viet » hoi viet, doi viet, noi viet
sau lan » dau luan
oi viet » hoi viet, o viet, cuoi viet
cac nam » bac nam, cac cam, cac ham
so viet » hoc viet
ky lan » ky dan, ky la
lan va » luan va, lanh va, lan van
nam co » nam cao, nam bo, nam so
cau co » cac co, cay co, dau co
co oi » co hoi, co loi, co doi

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