Perhaps you should try some spelling variations:
chuong trinh » cong trinh
cuong danh » cuon danh, huong dan, cuong linh
trinh han » trinh quan
cong danh » cong dan, cong thanh, cong khanh
trinh cau » trinh chat, trinh chao, trinh tu
trinh cac » trinh chat, trinh chao, trinh cham
trinh cao » trinh chao, trinh co, tinh cao
soi viet » so viet, oi viet, doi viet
hoi viet » hai viet, oi viet, thai viet
cac cac » cac cach, ca cac, cac cam
cac bac » cac bai, cac ban, cac cach
cac tay » cac cay, cac tac, cac tai
van va » van vat, van van, ban va
co hoi » co hoc, co loi
bo soi » bo doi, bo noi, bo so
tay co » ty co, cay co, tay o
cac co » cac cong
co soi » cot soi, co so, co loi

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 ((cong danh) OR (cuong danh)) va cac tay co hoi viet nam ) OR ((( chuong ((trinh cao) OR (trinh han)) van va cac bac bo soi viet nam ) OR ( chuong ((trinh cac) OR (trinh cau)) van va cac cac co soi viet nam ))))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( chuong trinh ((cong danh) or (cuong danh)) va cac tay co hoi viet nam ) or ((( chuong ((trinh cao) or (trinh han)) van va cac bac bo soi viet nam ) or ( chuong ((trinh cac) OR (trinh cau)) van va cac cac co soi viet nam ))))~".
• Adding a wildcard symbol may retrieve word variants: (( chuong trinh ((cong danh) or (cuong danh)) va cac tay co hoi viet nam ) or ((( chuong ((trinh cao) or (trinh han)) van va cac bac bo soi viet nam ) or ( chuong ((trinh cac) OR (trinh cau)) van va cac cac co soi viet nam ))))*.