Perhaps you should try some spelling variations:
chuong trinh » cong trinh
trinh cong » trinh dung
trinh cao » trinh chao, trinh co, trinh cau
tang van » dang van, hoang van, trong van
trinh tu » trinh ky, trinh do
tai viet » thi viet, mai viet, tai lieu
hai viet » thai viet, mai viet, dai viet
hoi viet » oi viet, thai viet, cuoi viet
soi viet » so viet, oi viet, doi viet
cong lan » cong luan, cong lang, cong san
tu tang » tuc tang, tu trang, tu tong
cay cot » cay coc, cay cat, cay ot
danh va » doanh va, hanh va, dan va
cac cot » cac co, cac cong, cac chat
anh va » hanh va
lan va » luan va, lanh va, lan van
van ca » van cau, van cua, dan ca
ca cay » cua cay, cac cay, ca cac
cay co » cac co, tay co, cay cong
co hoi » co hoc, co loi

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 lan va cac ((cay cot) or (cac cot)) soi viet nam ) or ( chuong trinh cao ((danh va) or (anh va)) cao ((cay cot) or (cac cot)) ((hai viet) or (tai viet)) nam ))) or ( chuong trinh tu tang van ca cay co hoi viet nam ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((( chuong trinh cong lan va cac ((cay cot) OR (cac cot)) soi viet nam ) OR ( chuong trinh cao ((danh va) OR (anh va)) cao ((cay cot) OR (cac cot)) ((hai viet) OR (tai viet)) nam ))) OR ( chuong trinh tu tang van ca cay co hoi viet nam )).
• Adding a wildcard symbol may retrieve word variants: (((( chuong trinh cong lan va cac ((cay cot) or (cac cot)) soi viet nam ) or ( chuong trinh cao ((danh va) or (anh va)) cao ((cay cot) or (cac cot)) ((hai viet) or (tai viet)) nam ))) or ( chuong trinh tu tang van ca cay co hoi viet nam ))*.