Perhaps you should try some spelling variations:
chuong trinh » cong trinh
trinh cao » trinh chao, trinh co, trinh cau
lanh van » lang van, anh van, canh van
trinh do » trinh ky
tai viet » thi viet, mai viet, tai lieu
cay cong » cac cong, cao cong, cau cong
cao lanh » cao lan, cao anh, cao danh
doi viet » dai viet, hoi viet, oi viet
soi viet » so viet, hoi viet, oi viet
do lanh » do sanh, do danh, do anh
lanh va » hanh va, anh va, lanh dao
cac cau » cac mau, bac cau, ca cau
cot soi » cot loi, cong soi
cac cap » cao cap, cac cam, cac cay
cay co » cac co, tay co
co lan » cao lan, co dan, co lao
van ca » van cau, van cua, dan ca
va co » vo 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 ((co lan) or (co ban)) va ((cac cap) or (cac cau)) cot soi viet nam ) or ( chuong trinh cao lanh va co ((cay co) OR (cay cong))t tai viet nam ))) or ( chuong trinh do lanh van ca ((cay co) OR (cay cong)) doi viet nam ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((( chuong trinh ((co lan) OR (co ban)) va ((cac cap) OR (cac cau)) cot soi viet nam ) OR ( chuong trinh cao lanh va co ((cay co) OR (cay cong))t tai viet nam ))) OR ( chuong trinh do lanh van ca ((cay co) OR (cay cong)) doi viet nam )).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(((( chuong trinh ((co lan) or (co ban)) va ((cac cap) or (cac cau)) cot soi viet nam ) or ( chuong trinh cao lanh va co ((cay co) OR (cay cong))t tai viet nam ))) or ( chuong trinh do lanh van ca ((cay co) OR (cay cong)) doi viet nam ))".
• Adding a wildcard symbol may retrieve word variants: (((( chuong trinh ((co lan) or (co ban)) va ((cac cap) or (cac cau)) cot soi viet nam ) or ( chuong trinh cao lanh va co ((cay co) OR (cay cong))t tai viet nam ))) or ( chuong trinh do lanh van ca ((cay co) OR (cay cong)) doi viet nam ))*.