Perhaps you should try some spelling variations:
chuong trinh » cong trinh
trinh cay » trinh cau, trinh may, trinh cac
trinh cao » trinh chao, trinh co, trinh cau
hoi viet » oi viet, thai viet, cuoi viet
cao bang » cao dang, cao tang, cao nang
loi viet » loai viet, oi viet, doi viet
hai viet » thai viet, mai viet, tai viet
cac cac » cac cach, ca cac, cac bac
cao anh » cao dang, cao tang, cao nang
cac tay » cac cay, cac tac, cac tai
cay anh » cay lanh, cay xanh, gay anh
cao van » cac van, dao van, cao dang
tay co » ty co, cay co
co loi » co hoi
anh va » hanh va
co hai » co dai, co hoi, o hai
cac co » cac cong
van va » van vat, van van, ban va
o hoi » co hoi, o hoc, o hai

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 cay anh va cac tay co hai viet nam ) or ( chuong trinh ((cao anh) or (cao bang)) va cac tay o hoi viet nam ))) or ( chuong trinh cao van va cac cac co loi viet nam ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((( chuong trinh cay anh va cac tay co hai viet nam ) OR ( chuong trinh ((cao anh) OR (cao bang)) va cac tay o hoi viet nam ))) OR ( chuong trinh cao van va cac cac co loi viet nam )).
• Adding a wildcard symbol may retrieve word variants: (((( chuong trinh cay anh va cac tay co hai viet nam ) or ( chuong trinh ((cao anh) or (cao bang)) va cac tay o hoi viet nam ))) or ( chuong trinh cao van va cac cac co loi viet nam ))*.