Perhaps you should try some spelling variations:
chuong trinh » cong trinh
trinh chat » tinh chat, trinh luat, trinh han
trinh mat » trinh vat, trinh may, trinh mau
chat dan » chat ban, chat ran, hat dan
hoi viet » hai viet, thai viet, cuoi viet
mat dan » hat dan, luat dan, mat bang
oi viet » o viet, cuoi viet, gioi viet
cac tay » cac cay, cac tac, cac tai
tay co » ty co, cay co, tay o
dan va » doan va, ban va, han va
ca cac » cua cac
co l » co ly, co le, co _

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