Perhaps you should try some spelling variations:
chuong trinh » cong trinh
trinh cong » trinh dung
cong lanh » cong danh, cong lang, bong lanh
trinh cao » trinh chao, trinh co, trinh cau
soi viet » so viet, oi viet, doi viet
hoi viet » hai viet, oi viet, thai viet
lanh va » hanh va, anh va, lanh dao
cac tay » cac cay, cac tac, cac tai
cac cac » cac cach, ca cac, cac cam
cao van » dao van, cao dang, cao tang
cac bac » cac bai, cac ban, cac cach
van va » van vat, van van, ban va
co soi » cot soi, co so, co loi
bac co » bac cao, bac bo, bac ho
co hoi » co hoc, co loi
tay co » ty co, cay co, tay o
cac co » cac cong

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